Going-to-the-Sun Road: Glacier's Alpine Highway Before Winter Closes It

Introduction: Winter Is Closing In on the Sun Road

The clock is running on one of the most famous drives in America. On Friday evening, October 9, Glacier National Park closed the alpine section of Going-to-the-Sun Road — from Avalanche to Jackson Glacier Overlook — as a winter storm swept over the high country with snow, gusting wind, and a hard freeze. The closure is temporary, and the road could reopen if conditions improve. But nobody mistakes what's coming: the alpine portion of the Sun Road typically shuts down for the season around the third Monday of October, and this year's date falls on October 19.

If you've ever wanted to drive it, this is the week to decide. The 50-mile road climbs from the forests of the west side over the Continental Divide at Logan Pass (6,646 feet) and descends to the plains-side east entrance — a route so improbable it took more than a decade to build, and one that still closes every winter like clockwork. Here's everything you need to know to drive it before the snow wins.

What Happened: A Storm Shuts the Alpine Section

The October 9 closure wasn't a surprise — it's the season for it. The National Park Service said the restricted section covered the high mountain portion of the road that crosses the park, with Logan Pass facing double-digit snowfall and temperatures in the teens. You can follow the current status on the park's Going-to-the-Sun Road page, the single authoritative source for whether the alpine miles are open.

This is a temporary closure, not the seasonal one — yet. The road has already weathered several temporary shutdowns this fall, including one after a September storm buried Logan Pass in snow. Historically, the final seasonal closing dates tell the story: October 14 last year, October 21 the year before, and dates as early as late September in snowy years. When the permanent closure comes, the lower road on the west side stays open year-round as far as Lake McDonald — the park's west side never goes quiet, but the alpine crossing ends until summer.

The Drive: West Glacier to St. Mary, 50 Miles

The classic run starts at West Glacier and climbs northeast to St. Mary, crossing the Continental Divide at Logan Pass. Budget four to six hours with stops; the pure drive is about two hours. West to east:

Don't-miss stops, west to east:

Lake McDonald — the drive's opening act. Stop at the shore near Apgar Village for the famous colored pebbles under glass-clear water, then roll past McDonald Falls.
Trail of the Cedars and Avalanche Gorge — at Avalanche Creek, a short boardwalk loops through old-growth cedar and hemlock past a roaring gorge. A great leg-stretcher.
The Loop — the tight hairpin where the road does a full switchback on the Garden Wall. Park and look back at the valley you've climbed out of.
Bird Woman Falls Overlook — a 492-foot ribbon of water falling from a hanging valley. It flows year-round, rare for park waterfalls.
Weeping Wall — a stretch where groundwater pours off the cliffs directly onto the road, soaking cars in summer. In fall it's quieter — and the point is the engineering: the road hangs from a vertical cliff here.
Logan Pass — the crest. The visitor center (seasonal) is the trailhead for the Highline Trail and the short, spectacular walk to Hidden Lake Overlook. Parking here fills early — this is the busiest spot on the road.
Jackson Glacier Overlook — the park's easiest glacier viewing, across the valley. It's one of the shrinking few still visible from a roadside pullout.
Sun Point and St. Mary Lake — the descent's postcard turn: Wild Goose Island floating in the middle of St. Mary Lake, with the road contouring the shore below.
St. Mary — the east entrance and the descent's end, where the alpine walls release you onto the plains.

The road takes its name from Going-to-the-Sun Mountain, visible from Logan Pass, whose name traces to a Blackfeet legend recounted by the early park guide James Willard Schultz. It was completed in 1932 after more than a decade of hand-and-machine labor, and it's a National Historic Civil Engineering Landmark — a status it shares with very few roads, like Colorado's Million Dollar Highway across Red Mountain Pass.

Driving It in the Final Weeks: The Fine Print

October on the Sun Road is a different animal than July. Here's what matters right now:

Check the road status the morning you drive. Conditions change by the hour in October — snow one day, sunshine the next. The park's road status page and Montana's 511 traveler information are the two sources worth bookmarking.
Vehicle size limits apply on the alpine section. Vehicles over 21 feet long, 8 feet wide, or 10 feet tall (including racks) are restricted between Avalanche Creek and Rising Sun — and nearly everything longer than a full-size pickup falls into that bucket. If you're driving an RV or towing, this road isn't for you.
Start early or drive late. Logan Pass parking fills by mid-morning in season; in October the crowds are thinner, but daylight is shorter. Sunrise over St. Mary Lake is worth the alarm.
Fuel up before entering. There is no gas sold inside Glacier. Fill in West Glacier or St. Mary before you commit to the crossing.
Bring real layers and expect weather. The road crosses from 3,000-foot valleys to a 6,646-foot pass in 50 miles — that's two climates in one drive. Wind chill at Logan Pass can be 20 degrees colder than West Glacier.
Go easy on the throttle and the brakes. The alpine miles are narrow, with stone guard walls and drop-offs measured in hundreds of feet. Drive the speed your nerves allow, and use pullouts to let faster traffic by.

When to Go

The full alpine road is typically open from early July to mid-October — the exact dates are set by snowplows in spring and snowstorms in fall. Late September to mid-October is the sleeper season: golden alpine larch and aspen, thinner crowds, and crisp visibility, with the understanding that a storm can end your plans in an afternoon. The lower road around Lake McDonald stays open much later into the year, often year-round.

Winter is the other option: the park's east and west sides go quiet, cross-country skiers get the lower road to themselves, and the alpine miles — like the Beartooth Highway — wait for the plows. But you don't get to drive them.

The Bottom Line

Going-to-the-Sun Road is the alpine drive against which all others are measured — partly for the scenery, which needs no help, and partly for the audacity of putting a road where the engineers found only a cliff and a waterfall. Every October it loses a game of chicken with winter, and this week it's down to the wire: temporarily closed on the 9th, possibly reopening, with the seasonal endgame almost certainly before the month is out. Check the Glacier National Park conditions, fill the tank, and go while the sun road still has sun.