Going-to-the-Sun Road East Side Technical
Glacier's legendary cliff-edge mountain highway
Going-to-the-Sun Road’s eastern approach from Saint Mary climbs through aspen groves and alpine meadows before hitting the Continental Divide at Logan Pass, where mountain goats treat your rig like a roadside curiosity. The narrow, carved-granite shelves with thousand-foot drop-offs and blind corners make this one of America’s most nerve-testing mountain drives—forget about passing zones when tour buses lumber around hairpins barely wider than a school bus.
Any vehicle handles the pavement, but weather’s your real enemy. Snow closes sections from October through June, and summer thunderstorms can dump hail that’ll dent your hood while reducing visibility to feet. No fuel stations for 50 miles, and cell service dies after Saint Mary. What you earn is Glacier National Park’s crown jewel route, waterfalls that spray your windshield, and alpine views that justify every white-knuckle moment on those cliff-edge switchbacks.
Trail Specs
| Difficulty | Moderate |
|---|---|
| Trail Type | Scenic Drive |
| Surface | Gravel |
| Features | High Altitude, Scenic |
| Length (miles) | 35 mi / 56.3 km |
| Duration | 1 day |
| Max elevation (ft) | 6646 ft |
| Best season | July-September |
| Minimum vehicle | Any vehicle |
| Nearest town | Saint Mary, Montana |
| Land manager | National Park Service |
| Permit required | Yes |
| Cell service | Spotty |
| Water crossings | No |
| Dispersed camping | No |
| Official sources | nps.gov |
| Start coordinates | |
| Find on Google | Search on Google → |
Location
Trail Conditions
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Frequently asked questions
Can I drive Going-to-the-Sun Road in my full-size truck or with a trailer?
Vehicles over 21 feet long (including tow vehicles with trailers) or wider than 8 feet are prohibited between Avalanche Creek and the Sun Point parking area. If you're hauling a trailer, you'll need to unhitch and leave it in Saint Mary or Apgar.
When does the road actually open and close each year?
The full road typically opens in late June to early July depending on snowpack and plowing progress — it's rarely fully open before July 4th. It closes to through-traffic by mid-October, sometimes earlier if early snow hits.
Do I need a permit or reservation to drive this road?
Yes. From late May through mid-September, a timed-entry vehicle reservation is required to drive the road between 6am and 3pm. Reservations are booked through Recreation.gov and sell out fast — grab one months in advance or try the day-before lottery.
What's the hardest or most exposed section of the drive?
The stretch near Logan Pass on the west side gets the most attention, but on the east side the cliff-edge segments above Saint Mary Lake offer serious alpine exposure with minimal guardrails and sheer drop-offs. Wind gusts can be intense and sudden — keep your speed down and your windows up if you've got anxious passengers.
Is there anywhere to camp along the east side, and how far is the nearest gas?
Saint Mary Campground sits right at the eastern trailhead and takes reservations through Recreation.gov — dispersed camping is not allowed anywhere in Glacier National Park. Fuel up in Saint Mary before you go; there's no gas on the road itself, and the next reliable stop heading west is West Glacier, roughly 50 miles away.
Trail track
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