Winter drive along Lake McDonald
West Glacier to Lake McDonald Lodge is usually plowed and open year-round, weather permitting. The unplowed road beyond the lodge is a ski and snowshoe route. Read the NPS winter guidance.
Find your road
Going-to-the-Sun Road crosses the park between West Glacier and St. Mary. Many Glacier and Two Medicine are separate eastern approaches; Inside North Fork Road runs south from Polebridge toward Logging Creek.
- Going-to-the-Sun Road (full road)
- Many Glacier Road
- Two Medicine Road
- Inside North Fork Road
- Named viewpoints, trailheads and road junctions
- Park entrances
- National park boundary
Glacier road seasons
Rows show normal seasonal patterns. Dated construction closures belong in official conditions, not the recurring season.
| Road | Vehicle season or access rule | Destinations & limits |
|---|---|---|
Going-to-the-Sun Road (full road) | Normal full-road season: late June or early July to third Monday in October | Full road over Logan Pass. West Glacier to Lake McDonald Lodge is usually plowed year-round, weather permitting. |
Many Glacier Road | Seasonal spring access; closes third weekend in November, weather permitting | Many Glacier Entrance to Swiftcurrent. All seasonal timing is weather permitting. |
Two Medicine Road | Seasonal spring access; closes when snow requires it | Two Medicine Entrance to Two Medicine Lake. Normal snow closure can be superseded by a project closure. |
Inside North Fork Road | Seasonal access; no road-specific fixed dates | Polebridge Ranger Station toward Logging Creek. General park-wide late-May opening guidance does not establish this road's date. |
Winter access
Plan around the normal winter road network, then confirm your route with NPS.
Spring opens in stages
NPS says road plowing takes months, giving ranges of two and a half to three months and two to four months. Most roads normally open by late May, while Logan Pass usually waits until late June or early July. Higher trails can still be snow covered.
Fall gates depend on weather
The full Going-to-the-Sun Road normally lasts until the third Monday in October. The west gate then moves to Avalanche Creek or Lake McDonald Lodge, with an east gate also set by weather. Many Glacier normally closes the third weekend in November. Two Medicine closes when snow requires it.
Before you drive
Check the limits and travel rules for the road you plan to drive.
Going-to-the-Sun Road
Measure the whole vehicle before planning to cross Logan Pass.
- Over 21 feet long, including bumpers, or over 8 feet wide, including mirrors, is prohibited between Avalanche Creek and Rising Sun.
- Vehicles over 10 feet high may have difficulty westbound from Logan Pass to the Loop because of rock overhangs.
Stock trucks and trailers can access Packers Roost on the west and Siyeh Bend on the east.
Many Glacier Road
Use the Many Glacier Entrance approach for Swiftcurrent.
- Normal closure is the third weekend in November, weather permitting.
- Check the road map and project notices before travelling to the valley.
Two Medicine Road
Do not treat a normal snow season as a construction access promise.
- Normal closure follows inclement weather and accumulating snow.
- Check the project page for restrictions at Running Eagle Falls and the MT-49 junction.
Inside North Fork Road
This is the Polebridge to Logging Creek route, not a generic Bowman or Kintla Lake road.
- North Fork roads are rough and unpaved.
- Vehicles over 21 feet and trailers are prohibited, except private horse trailers accessing the Bowman horse corral.
- NPS recommends four-wheel or all-wheel drive and the ability to change a tire.
Fuel, alerts and border access
Plan beyond the park boundary as well as the road you want to drive.
Fill up before entering
There are no fueling stations inside Glacier. Text GNPROADS to 333111 for road-opening and closing alerts. Near entrances, NPS also provides information on 1610 AM and at 406-888-7800. Check Montana road reports for outside roads.
Chief Mountain is a seasonal crossing
NPS lists Chief Mountain Border Crossing as May 15 to September 30, with hours varying. A passport is required for international crossings. Confirm hours with U.S. Customs and Border Protection before planning a Canadian approach.
Keep access rules separate from road season
A road opening does not settle shuttle, parking or reservation rules.
Check the rules for your travel year
The park changes shuttle and parking arrangements by year. The 2026 season used a ticketed Logan Pass shuttle and summer parking time limits, while vehicle reservations were not required. Use the official 2026 explanation as a historical reference and our reservations guide for planning pointers.
Storms can interrupt any season
NPS news reports document alpine closures after heavy rain and valley closures after flooding. Check conditions and GNPROADS alerts rather than assuming that a seasonal date guarantees passage. The Going-to-the-Sun Road guide covers that drive in detail.
Road seasons and crowds
The comparison uses five-year monthly means of park recreation visits from 2021 to 2025. It is a planning comparison, not a road-status measure.
How visits line up with access
April averages 6% of July's park visits, May 27% and June 72%. September is 73%, October 18% and November 3%. Logan Pass can still be closed in June; fall access can contract before a valley road's usual snow closure. See the best time to visit Glacier for the month-by-month tradeoffs.
Questions about Glacier road closures
Quick answers to the practical questions below.
Is Glacier worth visiting if Going-to-the-Sun Road is closed?
Yes, if you plan around it. The stretch from West Glacier to Lake McDonald Lodge is usually open all year, and by late May most roads are open for vehicles, except Going-to-the-Sun Road over Logan Pass, which usually opens fully in late June or early July. In winter the unplowed road past Lake McDonald Lodge is a ski and snowshoe route. Before a fall trip to one of the valley roads, check the project page, because road rehabilitation can close a valley for a whole season.
Does a government shutdown close Glacier's roads?
The September 2025 NPS contingency plan says park roads generally remain accessible during a lapse in appropriations. Safety issues, including weather or road conditions, can require closures. The plan also says regular road and trail condition updates will not be provided. Seasonal access rules still apply; check official park and state travel notices before leaving.
How we built this page.
An independent guide using official data. Not affiliated with or endorsed by the National Park Service.
- Official guidance
- NPS and the relevant operators. The linked official pages support the access, facilities and rules described here. Confirm details before traveling.
- Schedules and conditions
- Planning patterns, not live status. Seasonal information describes the normal pattern or explicitly dated source schedule. Current conditions are handled separately. The official source is the place to confirm today’s access.
Topic sources and data details
Normal road access, driving rules and the explicitly dated planning schedule come from the official NPS pages linked beside the rows and cards. Claim evidence and source captures are recorded in research/roads/glacier-2026-10-27.json. Temporary closures, construction dates and service availability must be checked with NPS.
Map lines use the existing OpenStreetMap geometry routed by OSRM. Lines show road routes, not precise closure gates. Rows without road geometry have no locator map.
Monthly crowd comparisons use the committed five-year recreation-visit means for 2021 to 2025. These are park-wide visits, not road traffic. The shutdown FAQ describes the September 2025 NPS contingency plan and its safety and update limitations.
Operational source check: September 11, 2026. Design and emphasized source review: 2026-10-27. A design review does not refresh every underlying record.