Glacier National Park, Montana

Glacier National Park preserves over one million acres of glacier-carved terrain straddling the Continental Divide in northwest Montana. Its landscape — sculpted by ice over millions of years — features knife-edge ridges (arêtes), horn peaks, hanging valleys, and over 700 lakes. The park's namesake glaciers, once numbering 150, have retreated to fewer than 25 active glaciers, making it a living laboratory for climate change. Going-to-the-Sun Road, one of the most dramatic mountain highways ever built, bisects the park and serves as its primary visitor corridor.

Things to Do

Lake McDonald — The park's largest lake (10 miles long, 472 ft deep). Famous for colorful rocks visible through crystal-clear water. Surrounded by dense cedar-hemlock forest on the park's wet west side.
Glacial Geology — The park's landscape was sculpted by massive glaciers over the last 2 million years. U-shaped valleys, cirques, arêtes, and horn peaks are textbook examples of glacial erosion. Fewer than 25 named glaciers remain.
Going-to-the-Sun Road — A 50-mile transmountain highway crossing the Continental Divide at Logan Pass. One of the most spectacular mountain drives in the world. Vehicle restrictions: 21 ft max length, 8 ft max width.
Wild Goose Island Overlook — A tiny island in Saint Mary Lake framed by mountain peaks — one of the most photographed scenes in the Northern Rockies. Best in morning light.
Highline Trail (Moderate, 11.8 mi, 800 ft gain) — 11.8-mile point-to-point from Logan Pass along the Continental Divide to Granite Park Chalet. Narrow cliffside sections with cable handholds. Extraordinary views.
Trail of the Cedars (Easy, 0.7 mi, 50 ft gain) — A 0.7-mile ADA-accessible boardwalk through an ancient cedar-hemlock forest. Passes Avalanche Gorge with turquoise glacier meltwater.
Gunsight Pass (Strenuous, permit required, 20 mi, 3800 ft gain) — A 20-mile point-to-point traverse crossing the Continental Divide at 7,000 ft. Links Lake McDonald to Saint Mary via Sperry Chalet and Gunsight Lake. 2–3 days.
The Loop Overlook — A hairpin turn on Going-to-the-Sun Road with sweeping views of the McDonald Creek valley and Heavens Peak. Starting point for the Granite Park Chalet hike.
Grinnell Glacier Trail (Moderate-Strenuous, 10.6 mi, 1600 ft gain) — 10.6-mile roundtrip from Many Glacier to one of the park's remaining glaciers. Passes turquoise lakes, waterfalls, and alpine meadows. One of the park's signature hikes.
Logan Pass — The Continental Divide crossing at 6,646 ft on Going-to-the-Sun Road. Alpine meadows, mountain goats, and the start of the Highline Trail. The park's most-visited area.
Hidden Lake Overlook (Easy-Moderate, 2.7 mi, 500 ft gain) — 2.7-mile roundtrip from Logan Pass Visitor Center to a stunning overlook of Hidden Lake and Bearhat Mountain. Mountain goats frequently spotted along the trail.
Many Glacier — A valley of glacial lakes, waterfalls, and towering peaks in the park's northeast. Often called the 'Switzerland of North America.' Best area for day hiking and grizzly bear sightings.
Avalanche Lake (Moderate, 5.9 mi, 730 ft gain) — 5.9-mile roundtrip through old-growth forest to a glacial cirque lake fed by waterfalls from Sperry Glacier. Accessible from Going-to-the-Sun Road.
Continental Divide — The hydrological spine of North America runs through the park. Triple Divide Peak is the only point in North America where water flows to three oceans (Pacific, Atlantic, Arctic).

When to Visit

Spring

A patience season — the park is slowly emerging from deep winter. Access is limited but the waterfalls are thundering and the solitude is absolute. Check road status daily.
Roads: Going-to-the-Sun Road closed above Lake McDonald Lodge (west) and Rising Sun (east). Lower elevation trails accessible. Plowing typically begins in April; full opening not until late June.
Crowds: Very low — limited access means few visitors
Permit pressure: None — most backcountry inaccessible
Photography: Dramatic cloud formations over peaks. Waterfalls at maximum flow. Snow-capped peaks with green valleys below.
Risks: Avalanche risk on slopes. Snow-covered trails above 5,000 ft. Grizzly bears emerging from dens. Rapidly changing weather. Creek crossings can be dangerous with snowmelt.
Landscape: Heavy snowpack at elevation. Waterfalls at peak flow from snowmelt. Avalanche debris on trails. Lower valleys greening up. Bear grass not yet blooming.

Summer

The full Glacier experience — Going-to-the-Sun Road open, all trails accessible, wildflowers at peak. Use the free shuttle to bypass parking chaos at Logan Pass.
Roads: Going-to-the-Sun Road fully open (typically early July–mid-October). Vehicle restrictions: 21 ft length, 8 ft width. Free shuttle system operating. All areas accessible.
Crowds: Very high — Logan Pass parking fills by 8:30 AM in July–August. Shuttle recommended.
Permit pressure: Very high — Gunsight Pass, Nyack-Coal Creek, and other popular backcountry permits fill within hours of March 15 reservation opening
Photography: Alpine light at Logan Pass is extraordinary. Glacial lake reflections best in early morning before wind. Bear grass blooming (biennial) creates white meadow carpets.
Risks: Extreme crowding at Logan Pass. Afternoon thunderstorms with lightning on exposed ridges. Grizzly bear encounters — bear spray mandatory. Vehicle size restrictions on Going-to-the-Sun Road.
Landscape: Peak wildflower bloom at Logan Pass and in alpine meadows (mid-July to early August). Glacial lakes at deepest blue. All trails snow-free above treeline by late July. Mountain goats visible at Logan Pass.

Fall

The larch season is a hidden gem — golden needles against glacier-carved peaks draw photographers but not crowds. Weather is a gamble but the payoff is extraordinary.
Roads: Going-to-the-Sun Road open into mid-October (weather dependent). Some east-side sections may close earlier. Many Glacier Road open through September.
Crowds: Moderate September, Low October
Permit pressure: Low — backcountry thins dramatically after Labor Day
Photography: Golden larch against dark evergreens is a signature Glacier image. Low-angle light in the valleys. Reflections on lakes excellent in calm mornings.
Risks: Rapidly changing weather — snowstorms possible by late September. Some facilities close after Labor Day. Bears in hyperphagia — heightened encounter risk. Going-to-the-Sun Road can close without notice.
Landscape: Larch trees turn gold at high elevations (late September–early October) — unique to Glacier among the major parks. Alpine meadows turn amber. Bears feeding aggressively in berry patches.

Winter

For dedicated winter recreationists only. The park is essentially closed to casual visitors, but those who venture in find a pristine, silent wilderness of ice and snow.
Roads: Going-to-the-Sun Road closed above Lake McDonald Lodge. Most facilities closed. Apgar area and some west-side trails accessible for snowshoeing and cross-country skiing.
Crowds: Minimal — a few cross-country skiers and snowshoers
Permit pressure: None — backcountry skiing/snowshoeing only for experienced parties
Photography: Rare clear days offer extraordinary winter alpine scenery. Snow-laden peaks. Limited daylight but intense colors when sun breaks through.
Risks: Extreme cold and heavy snow. Avalanche risk throughout. Very limited services. No road access to interior. Short days.
Landscape: Deep snow transforms the landscape. Frozen waterfalls. Heavy cloud cover common on west side. East side can have clearer skies with extreme wind.

Frequently Asked Questions

When does Going-to-the-Sun Road open?

Typically late June to early July for the full road, depending on snowpack. The road closes for the season in mid-to-late October. Plowing begins in April but the highest sections near Logan Pass are the last to clear. Check the NPS website for real-time status.

How many days do you need for Glacier?

2–4 days is ideal. Day 1: Drive Going-to-the-Sun Road with stops (plan 3+ hours). Day 2: Highline Trail or Hidden Lake from Logan Pass. Day 3: Many Glacier area — Grinnell Glacier or Iceberg Lake. Day 4: Two Medicine or Bowman Lake for a quieter experience.

Do you need a vehicle reservation for Glacier?

Yes — a vehicle reservation is required to enter Going-to-the-Sun Road corridor between 6 AM and 3 PM during peak season (typically late May–early September). Reservations are released in batches. Alternatively, use the free park shuttle from Apgar or St. Mary to bypass the requirement.

Can you visit Glacier in October?

Yes, but with caveats. Going-to-the-Sun Road is typically open until mid-October, weather permitting. Many facilities close after Labor Day. The western larch turn golden in late September–early October, creating spectacular scenery. Expect cold temperatures and possible snow.

What is the closest airport to Glacier?

Glacier Park International Airport (FCA) in Kalispell is 30 minutes from the west entrance (Apgar). Missoula (MSO) is about 3.5 hours. Great Falls (GTF) is 3 hours to the east side. Calgary (YYC) in Canada is about 4.5 hours to the north.

Glacier National Park

Quick Facts