Seasonal roads
When the mountain roads open — and close
Last verified 61 roads · 22 parks11 official histories
Going-to-the-Sun, Tioga, Trail Ridge, the Beartooth, the North Cascades Highway: the drives that make a trip, and the ones snow keeps shut half the year. The typical season in the park’s own words, this year’s dates, and the official year-by-year record where one exists — back to 1933 for Logan Pass.
- Roads tracked
- 61
- With history tables
- 11
- Oldest record
- 1921
- Old Fall River Road
- Dates verified
- 952
- against saved pages
At a glance
When each pass usually opens
Every bar runs from the earliest to the latest opening on the park's official record; the notch is the median and the dot is this year. Sorted from earliest to latest.
AprMayJunJulAugSep
median- North Cascades HighwayNorth Cascades · 53 years on recordApr 242026: Jun 14
- Cayuse PassMount Rainier · 51 years on recordMay 72026: May 22
- Glacier Point RoadYosemite · 30 years on recordMay 162026: May 9
- Tioga RoadYosemite · 68 years on recordMay 242026: May 15
- Chinook PassMount Rainier · 90 years on recordMay 272026: May 22
- Trail Ridge RoadRocky Mountain · 78 years on recordMay 302026: May 29
- Lassen Volcanic Park HighwayLassen Volcanic · 47 years on recordJun 32026: May 22
- North Entrance Road and West Rim DriveCrater Lake · 20 years on recordJun 11
- Going-to-the-Sun RoadGlacier · 90 years on recordJun 132026: Jun 22
- Old Fall River RoadRocky Mountain · 37 years on recordJul 1
- East Rim DriveCrater Lake · 19 years on recordJul 10
earliest → latest on record median 2026
2 roads
Crater Lake National Park
| Road | Typically opens | Typically closes | 2026 | History |
|---|---|---|---|---|
| North Entrance Road and West Rim Drive North Entrance Road: nine miles from OR Hwy 138 to North Junction; West Rim Drive: between… | No set dates; plowing typically begins on West Rim Drive in mid-April and all roads are ready to open by mid-July; reopens in stages beginning in May with West Rim Drive, then North Entrance Road, finally East Rim Drive | With the first big snowstorm or on November 1, whichever comes first | — · In preparation for winter it closes on November 1, or earlier if snowfall is significant (North Entrance Road); West Rim Drive: 'closes on November 1, or earlier' | 2004–2023 |
| East Rim Drive From North Junction (left turn from the North Entrance Road) to Munson Valley near Steel V… | Last to open (after West Rim Drive and North Entrance Road); 'it is often mid-July before all of the road can open, depending on snowpack' | With the first big snowstorm or on November 1, whichever comes first | — · In preparation for winter it closes on November 1, or earlier (East Rim Drive); Pinnacles Road and Cloudcap close when East Rim Drive closes | 2004–2023 |
8 roads
Mount Rainier National Park
| Road | Typically opens | Typically closes | 2026 | History |
|---|---|---|---|---|
| Chinook Pass (SR 410) SR 410/Chinook Pass between Crystal Mountain Boulevard, about 12 miles northwest of the su… | Reopens in the spring after snow is cleared (no typical date stated by NPS; see history) | Closes each winter due to snow levels and avalanche danger (no typical date stated by NPS; see history) | Scheduled May 22, 2026 | 1935–2025 |
| Cayuse Pass (SR 123) SR 123/Cayuse Pass within the park boundaries between the southern park entrance near Pack… | Reopens in the spring after snow is cleared (no typical date stated by NPS; see history) | Closes each winter due to snow levels and avalanche danger (no typical date stated by NPS; see history) | Scheduled May 22, 2026 | 1973–2025 |
| Stevens Canyon Road Paradise to Ohanapecosh via Stevens Canyon Road, 23 miles, about 45 minutes; tunnel height… | — | — | — · Scheduled to close October 26, 2026, date subject to change | — |
| Sunrise Road White River Entrance to Sunrise (13 miles, about 45 minutes); Sunrise is the highest point… | Late June or early July | Late September to early October | — · Closed to vehicles for the rest of the season: 'Sunrise Road CLOSED to vehicles due to the Grand Park 2 & Wonderland Complex Fires until further notice' (open to pedestrians and bicyclists only), per the road-status page of Sept 28, 2026 | — |
| White River Road (to White River Campground) SR 410 to the White River Campground (White River Entrance road) | — | — | — · Scheduled to close October 26, 2026, date subject to change | — |
| Paradise Valley Road One-way scenic route leaving Paradise connecting to Stevens Canyon Road | — | — | — · Scheduled to close October 19, 2026, date subject to change | — |
| Ricksecker Point Road | — | — | — · Scheduled to close October 20, 2026, date subject to change | — |
| Longmire to Paradise road (Nisqually Entrance road) Nisqually Entrance (southwest corner) to Longmire to Paradise, 12 miles from Longmire to P… | Open year-round, with winter closures at the Longmire gate as weather requires | Nightly gate closures begin when weather requires, 'typically in late October or early November' | — · From October 13 until weather requires nightly gate closures (typically late October or early November), Paradise visitor center is open Friday-Monday; the road 'may close at any time depending on weather/road conditions'; tire chains required for all vehicles November 1 - May 1 | — |
2 roads
Rocky Mountain National Park
| Road | Typically opens | Typically closes | 2026 | History |
|---|---|---|---|---|
| Trail Ridge Road U.S. Highway 34 inside Rocky Mountain National Park; the highest continuous paved road in … | Last week in May, weather permitting (historically opens in late May) | Mid-October (normally closes in mid-October); the table's average winter closure date is October 23 | Opened May 29, 2026 | 1932–2009 |
| Old Fall River Road Unpaved 9.4-mile one-way (uphill only) road from Endovalley Picnic Area to Fall River Pass… | Early July (normally opens to vehicles in early July) | Early October (open to vehicles each year from early July to early October) | — · Closing for the season to vehicles beginning Tuesday, Oct 6 (closed to all uses through Friday, Oct. 9; open to bicycles, leashed pets and walkers Oct. 10-12; closed again to all uses Oct. 13-16; reopens to bicycles, leashed pets and pedestrians for the winter on Saturday, October 17) - per the park road page captured Oct 5, 2026 | 1921–2009 |
2 roads
Yosemite National Park
| Road | Typically opens | Typically closes | 2026 | History |
|---|---|---|---|---|
| Tioga Road Tioga Road (Highway 120 through the park, from Crane Flat to Tioga Pass); the closure exte… | Late May or June (typically open to vehicles from late May or June until sometime in November; plowing typically begins around April 15) | Sometime in November (closes due to snow, usually from sometime in November through late May or early June) | Scheduled May 15, 2026 | 1957–2025 |
| Glacier Point Road The road to Glacier Point; from approximately mid-December through March the first five mi… | Sometime in May (typically open to vehicles from sometime in May until sometime in November; plowing typically begins around April 15) | Sometime in November | Opened May 9, 2026 | 1995–2025 |
1 road
Glacier National Park
| Road | Typically opens | Typically closes | 2026 | History |
|---|---|---|---|---|
| Going-to-the-Sun Road 50-mile road between West Glacier and St. Mary Entrances over Logan Pass | No set date to open over Logan Pass; typically fully open by early July (the lower-elevation sections remain open all year) | Typically fully open until the third Monday of October, weather permitting | Opened Jun 22, 2026 | 1933–2022 |
1 road
Lassen Volcanic National Park
| Road | Typically opens | Typically closes | 2026 | History |
|---|---|---|---|---|
| Lassen Volcanic Park Highway (Highway 89) Highway 89 through Lassen Volcanic National Park, the official park highway: a 30-mile str… | No established date. Snow clearing usually begins as early as mid-March and continues for about two months; opening dates vary with snowpack and may occur as late as early July | Closes due to snow in the fall (no typical date stated); the table's closing date is the date the highway officially closed for the year | Opened May 22, 2026 | 1980–2026 |
1 road
North Cascades National Park
| Road | Typically opens | Typically closes | 2026 | History |
|---|---|---|---|---|
| North Cascades Highway (State Route 20) SR 20/North Cascades Highway through North Cascades National Park Service Complex (2026 re… | — | — | Opened Jun 14, 2026 | 1972–2026 |
2 roads
Acadia National Park
| Road | Typically opens | Typically closes | 2026 | History |
|---|---|---|---|---|
| Park Loop Road Park Loop Road and the paved roads of the park (Mount Desert Island) | April 15 (table: Park Loop Road & Paved Roads Apr 15 - Dec 1) | December 1 | Scheduled Apr 15, 2026 · Dec 1 (Operating Hours & Seasons table, page updated Aug 27, 2026; listed without a year and not labelled '(2026)') | — |
| Cadillac Summit Road A windy, paved 3.5 miles up to the summit of Cadillac Mountain, off the Park Loop Road; no… | — | — | — · Vehicle reservations are required from mid-May to mid-October; the Cadillac Mountain vehicle reservation check station operates May 20 - Oct 25 (2026) | — |
2 roads
Big Bend National Park
| Road | Typically opens | Typically closes | 2026 | History |
|---|---|---|---|---|
| Black Gap Road Primitive dirt road: 'extremely rough and only suitable for the most rugged of vehicles' (… | — | — | — · Closed until further notice due to unsafe conditions from past flash flooding events (as of the Oct 5, 2026 capture) | — |
| Weather-closed roads (River Road, Glenn Springs, Old Maverick, Old Ore, Hot Springs, Cottonwood-Santa Elena paved road) River Road East and West; Glenn Springs Road south of Rice Tank Campsite; Old Maverick Roa… | — | — | — · Weather-related closures in effect as of the Oct 5, 2026 capture (no reopening date stated) | — |
3 roads
Black Canyon of the Gunnison National Park
| Road | Typically opens | Typically closes | 2026 | History |
|---|---|---|---|---|
| South Rim Road The 6-mile South Rim Road from the visitor center to High Point; in winter open to Gunniso… | Late April | Mid-November | — | — |
| North Rim Road North Rim: the last 7 miles of the park access road and the entire North Rim Drive are unp… | May | Mid-November (typically closes mid-November) | — | — |
| East Portal Road Six-mile road with a 16% grade to the Crystal Dam, the Gunnison Tunnel and the East Portal… | Spring (opened April 12, 2024 per an archived release) | Mid-November (typically closes mid-November) | — | — |
3 roads
Bryce Canyon National Park
| Road | Typically opens | Typically closes | 2026 | History |
|---|---|---|---|---|
| Main park road (scenic drive) The 18-mile Main Road; the first 3 miles reach the Bryce Canyon Amphitheater | Open year-round; in winter it 'will occasionally close to all traffic beyond Mile 3' after snowstorms (a day or more) until plowed | — | — | — |
| Fairyland Point road Spur road: the 1 mile (1.6 km) road leading to Fairyland Point; remains accessible to hike… | Reopens after the winter closure (no date stated) | Closes after snow levels begin to require plow removal; closed to vehicle traffic for the entire winter season | — | — |
| Paria View road Spur road: the 0.3 mile (0.5 km) road leading to Paria View; remains accessible to hikers,… | Reopens after the winter closure (no date stated) | Closes after snow levels begin to require plow removal; closed to vehicle traffic for the entire winter season | — | — |
1 road
Capitol Reef National Park
| Road | Typically opens | Typically closes | 2026 | History |
|---|---|---|---|---|
| Capitol Reef unpaved district roads (Notom-Bullfrog, Burr Trail, Cathedral Valley, Fruita roads) Roads in the Fruita Historic District, Waterpocket District and Cathedral Valley District;… | — | — | — | — |
1 road
Denali National Park & Preserve
| Road | Typically opens | Typically closes | 2026 | History |
|---|---|---|---|---|
| Denali Park Road The 92-mile Park Road; since the Pretty Rocks landslide closure (mile 45.4, August 2021) b… | Spring: for most of the winter the road is plowed only to Park Headquarters (Mile 3); mid-February to Mountain Vista (Mile 13); then sometime in April or early May it opens to Savage River (Mile 15) and Teklanika River (Mile 30). Transit buses start May 20 each year; the road never opens farther than Mile 30 to private vehicles | Fall: open to Teklanika (Mile 30), weather permitting, through October 15 or when snow or ice closes the road at Park Headquarters; bus service ends the second Thursday after Labor Day | Scheduled Apr 28, 2026 · Fall 2026: open to private vehicles to Teklanika (mile 30) beginning Friday, Sept. 18, weather and road conditions permitting; fall access continues as conditions allow through Oct. 15; may close at park headquarters (mile 3.4), Mountain Vista (mile 13) or earlier at any time because of winter weather | — |
2 roads
Grand Canyon National Park
| Road | Typically opens | Typically closes | 2026 | History |
|---|---|---|---|---|
| North Rim access, Highway 67 (AZ-67) Highway 67, the paved road to the North Rim of Grand Canyon National Park (the park's Nort… | — | — | Opened May 15, 2026 · The North Rim entrance gate on State Route 67 will close at sunset Nov. 30, 2026, or after the first major snowstorm, whichever comes first (Sept 30 release); North Rim Status Update: OPEN through Nov. 30, 2026 (or the first major snowstorm of the season). Modified fall operations begin Oct. 15 (General Store closes 4 p.m. Oct. 15; North Rim Campground closes the morning of Oct. 16; Cape Royal and Point Imperial roads closed Oct. 15 - Nov. 3 for repairs). | — |
| Cape Royal Road and Point Imperial Road (North Rim scenic roads) The North Rim Scenics: scenic drives to Point Imperial, Cape Royal, Roosevelt Point, Walha… | — | — | Opened May 15, 2026 · Closed from sunset Oct. 15 through sunrise Nov. 3, 2026, to accommodate critical road repair and rehabilitation work; North Rim status page says the North Rim is open through Nov. 30, 2026 or the first major snowstorm | — |
2 roads
Grand Teton National Park
| Road | Typically opens | Typically closes | 2026 | History |
|---|---|---|---|---|
| Teton Park Road Teton Park Road between Taggart Lake Trailhead and Signal Mountain Lodge (the closed secti… | Opens to vehicles May 1 (park hours table: 'May 1, Spring opening of Teton Park Road'); closed to vehicles November 1 to April 30 | October 31 / November 1 (winter closure of Teton Park Road); groomed for skiing mid-December to mid-March | Scheduled May 1, 2026 · October 31, Winter closure of Teton Park Road (operating hours page) | — |
| Moose-Wilson Road Full length of Moose-Wilson Road between the Granite Canyon Entrance Station and Moose | Mid-May based on conditions | November 1 (closed November 1 until mid-May based on conditions; unplowed from Death Canyon Road to Granite Canyon Trailhead) | Scheduled Jun 19, 2026 · The section between Moose and the Laurance S. Rockefeller Preserve (LSRP) closes to motor vehicle and bicycle traffic at the end of the day September 7, 2026, scheduled to continue through November 15; after November 15 the corridor transitions to seasonal winter recreation use as conditions allow (Aug 20, 2026 release). Death Canyon Road and Trailhead closed all of 2026. | — |
1 road
Great Basin National Park
| Road | Typically opens | Typically closes | 2026 | History |
|---|---|---|---|---|
| Wheeler Peak Scenic Drive Starting at the park boundary on Nevada Highway 488, a paved 12-mile out-and-back road to … | Usually open by Memorial Day weekend (the end of the drive opens in late May, as early as April and as late as July depending on snow; the road opens in segments as snow melts) | Late October (most park roads are typically open between Memorial Day and late October); the drive is 'closed in winter and after snowfall' | — | — |
10 roads
Great Smoky Mountains National Park
| Road | Typically opens | Typically closes | 2026 | History |
|---|---|---|---|---|
| Kuwohi Road (formerly Clingmans Dome Road) Page description: Scenic, two-lane, paved road from Newfound Gap Road to Kuwohi Visitor Ce… | — | — | Scheduled Apr 1, 2026 · 2026 Season 4/1-11/29 | — |
| Heintooga Ridge Road Page description: Two-way, paved road that connects the Blue Ridge Parkway and Heintooga R… | — | — | Scheduled May 15, 2026 · 2026 Season 5/15-10/31 | — |
| Heintooga Round Bottom Road Page description: One-way, gravel road that begins at the Balsam Mountain Picnic Area and … | — | — | — · 2026 Season TBD | — |
| Forge Creek Road Page description: Subject to closures due to snow, ice, or muddy conditions. | — | — | Scheduled Mar 6, 2026 · 2026 Season 3/6-12/31 | — |
| Little Greenbrier Road (to the Little Greenbrier Schoolhouse) Page description: Motorhomes, buses, and vans longer than 25 feet, plus passenger vehicles… | — | — | Scheduled Apr 3, 2026 · 2026 Season 4/3-11/29 | — |
| Parson Branch Road Page description: One-way, 8-mile road. High clearance vehicles are recommended. | — | — | Scheduled May 1, 2026 · 2026 Season 5/1-11/9 | — |
| Rich Mountain Road Page description: One-way road. | — | — | Scheduled Apr 10, 2026 · 2026 Season 4/10-11/9 | — |
| Roaring Fork Motor Nature Trail Page description: One-way road and very steep. | — | — | Scheduled Apr 17, 2026 · 2026 Season 4/17-11/29 | — |
| Straight Fork Road Page description: Two-way, gravel road providing access to Round Bottom horse camp. | — | — | — · 2026 Season TBD due to Hurricane Helene impacts | — |
| Cades Cove Loop Road Cades Cove Loop Road, open sunrise to sunset each day | Open year-round, weather permitting; closed to vehicles each Wednesday, typically from May through September | — | — | — |
1 road
Mesa Verde National Park
| Road | Typically opens | Typically closes | 2026 | History |
|---|---|---|---|---|
| Wetherill Mesa Road Wetherill Mesa; the entry gate opens at 8:30 am, last entry 2:00 pm, all visitors must exi… | — | — | Scheduled May 22, 2026 · Wetherill Mesa is open May 22 to October 21, 2026 | — |
2 roads
Olympic National Park
| Road | Typically opens | Typically closes | 2026 | History |
|---|---|---|---|---|
| Hurricane Ridge Road Hurricane Ridge is located 17 miles south of Port Angeles on Hurricane Ridge Road, off Mou… | Open throughout summer; in the winter season (generally late November through the end of March) scheduled open Friday through Sunday and holiday Mondays only, weather permitting | No seasonal closing date: the road is closed on Thanksgiving and Christmas and whenever weather requires. 'During the period of March 31 through April 30, Hurricane Ridge Road may open or close depending on road conditions and weather.' | — | — |
| Obstruction Point Road Branches off right at the entrance to the Hurricane Ridge parking area and provides access… | Mid-June (weather and snow permitting) | October 15 (weather and snow permitting) | — | — |
5 roads
Sequoia & Kings Canyon National Parks
| Road | Typically opens | Typically closes | 2026 | History |
|---|---|---|---|---|
| Highway 180 from Grant Grove to Cedar Grove Highway 180 from Grant Grove to Cedar Grove (Kings River Canyon); when closed, Caltrans cl… | Generally the fourth Friday in April (reopens in late April or early May) | Mid-November (typically closes in early to mid-November) | — | — |
| Mineral King Road Narrow, curving road into the Mineral King area of Sequoia National Park (the Mineral King… | The Wednesday before Memorial Day | The last Wednesday in October | — · Mineral King Road closes for the winter season on October 28, 2026; tentative construction closure/delay schedule Sept 8 - Oct 28, 2026 (full roadway closure 10 am-4 pm Monday-Thursday; closures with passthroughs at 10 am, 1 pm and 4 pm Friday-Sunday; no closures or delays Oct 9-13 holiday) | — |
| Generals Highway, Lodgepole to Grant Grove (winter closure) The section of the Generals Highway connecting Sequoia and Kings Canyon national parks; cl… | Third Friday in March (unplowed from the Friday after January 1 to the third Friday in March) | The Friday after January 1 (unplowed until the third Friday in March; otherwise stays open unless impassable due to snow) | — | — |
| Crystal Cave Road Leads to the parking lot for the trail to Crystal Cave; gated each night, open only on dat… | Mid May | Late September (may close if the cave closes unexpectedly) | — · CLOSED FOR THE SEASON; the road is expected to reopen in spring 2027 (road-conditions page) | — |
| Moro Rock / Crescent Meadow Road Moro Rock / Crescent Meadow trailhead road in Giant Forest; closed to private vehicles on … | The Wednesday before Memorial Day in late May (later in heavy snow years) | Closes for winter once it becomes impassable due to snow | — | — |
7 roads
Yellowstone National Park
| Road | Typically opens | Typically closes | 2026 | History |
|---|---|---|---|---|
| North Entrance to Northeast Entrance road (Gardiner to Cooke City) From the North Entrance at Gardiner, Montana, through the park to Cooke City, Montana (via… | Open year-round (the only road generally open year-round to regular vehicles) | — | — · Open year-round: North Entrance to Northeast Entrance | — |
| West Entrance, Madison, Old Faithful, Norris, Mammoth-Norris and Norris-Canyon roads West Entrance to Madison; Madison to Old Faithful; Madison to Norris; Mammoth Hot Springs … | Roads start to re-open to automobiles beginning in mid-April (2026 schedule: April 17); most park roads are closed to regular vehicles from early November to late-April | Per the park's 2026 schedule: October 31; most park roads are closed to regular vehicles from early November | Scheduled Apr 17, 2026 · Open April 17 - October 31, 2026 (projected; subject to change) | — |
| East Entrance (Sylvan Pass) to Fishing Bridge, and Canyon Village to Bridge Bay East Entrance to Fishing Bridge (Sylvan Pass); Canyon Village to Bridge Bay | Per the park's 2026 schedule: May 1 (no separate typical date is given) | Per the park's 2026 schedule: October 31; most park roads are closed to regular vehicles from early November | Scheduled May 1, 2026 · Open May 1 - October 31, 2026 (projected; subject to change) | — |
| South Entrance to West Thumb, West Thumb to Old Faithful (Craig Pass), West Thumb to Lake Village, Tower-Roosevelt to Tower Fall South Entrance to West Thumb; West Thumb to Old Faithful (Craig Pass); West Thumb to Lake … | Per the park's 2026 schedule: May 8 (no separate typical date is given) | Per the park's 2026 schedule: October 31; most park roads are closed to regular vehicles from early November | Scheduled May 8, 2026 · Open May 8 - October 31, 2026 (projected; subject to change) | — |
| Dunraven Pass (Canyon Village to Tower Fall) Canyon Village to Tower Fall (Dunraven Pass), a high elevation pass that generally experie… | Per the park's 2026 schedule: May 22 (no separate typical date is given) | Per the park's 2026 schedule: October 12; 'the closing date is subject to change' | Scheduled May 22, 2026 · Open May 22 - October 12, 2026 (projected; subject to change) | — |
| Beartooth Highway (US-212), Red Lodge to Cooke City US-212, Cooke City to Red Lodge, Montana (outside the park's Northeast Entrance; Yellowsto… | The Friday of Memorial Day weekend | Mid-October | — · Open May 22 - October 12, 2026 (projected; subject to change) | — |
| Chief Joseph Scenic Byway (WY-296) WY-296, Cooke City, Montana, to Cody, Wyoming, or Laurel, Montana (outside the Northeast E… | Mid-May for the wheeled-vehicle segment from Cooke City to Pilot Creek (open year-round from WY-120 to Pilot Creek Parking Lot) | Early November for that segment | — · Open May 22 - October 12, 2026 (projected; subject to change) per the 2026 schedule | — |
2 roads
Zion National Park
| Road | Typically opens | Typically closes | 2026 | History |
|---|---|---|---|---|
| Kolob Terrace Road Kolob Terrace Road; the seasonal closure begins at Maloney Hill, about one mile east (sign… | Reopens in spring (from fall to spring the road usually closes for several months due to snow; no dates stated) | Fall (usually closes for several months from fall to spring due to snow; no dates stated) | — | — |
| Lava Point Road Branches off Kolob Terrace Road | Open for most of the year; typically closed from fall into spring due to snow (no dates stated) | Fall (typically closed from fall into spring due to snow) | — | — |
About these dates
“Typically opens” and “closes” are the park’s own phrasing, not our estimate. This year’s date is filled only when an official page states it as done; a scheduled date is labelled as such. History tables come from the park or the state DOT and are parsed row by row — a row we cannot show in the source does not appear. Current status on the day you drive is on the park’s road-conditions page and, for Washington passes, WSDOT.
Sources · 2
- 1.Seasonal road pages and historical opening-date tables on nps.gov and wsdot.wa.gov, read and quoted · National Park Service; Washington State DOT
- 2.WSDOT mountain pass reports · Washington State Department of Transportation
FAQ
Seasonal road questions
- When does Going-to-the-Sun Road open?
- There is no set date. Over 90 recorded years the road opened over Logan Pass around Jun 13 on median — as early as May 16, 1987 (1987) and as late as Jul 15, 1933 (1933). In 2026 it opened Jun 22, 2026.
- When does Tioga Pass open?
- Yosemite's own table puts the median Tioga Road opening around May 24; the earliest on record is Apr 8, 1977 (1977) and the latest Jul 22, 2023 (2023). For 2026 the park announced May 15, 2026.
- Why do these roads close at all?
- Snow. High passes like Logan Pass (6,646 ft), Tioga Pass (9,943 ft) and Trail Ridge Road (12,183 ft) collect tens of feet of it, and plowing out takes weeks each spring. Fall closures come with the first storms that stick, so closing dates are rarely announced in advance.
- Where do these dates come from?
- From each park's own road-status pages and, for 11 roads, the official historical tables the park or state DOT publishes, captured on 2026-10-05. Every date and table row is re-checked against those captures when this site is built; we compute medians and extremes but never forecast.
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