Waterton Valley Trail

Overview

This is Glacier’s big northern corridor: a long forested valley walk from Goat Haunt that ramps into a sustained climb to the expansive Fifty Mountain plateau. It’s a 20.4-mile total out-and-back with roughly 3,900–4,000 feet of cumulative gain. Expect a steady grade most of the way and a steeper final push with switchbacks to reach the meadows. It’s a challenging day and a superb backbone for multi-day routes. Dogs are not allowed.

What You’ll See

From the Goat Haunt side, the trail follows the Waterton River through deep woods before opening to subalpine country near the top. Key junctions break up the miles: a spur to Kootenai Lakes (a classic moose-spotting detour), the Stoney Indian Pass junction, and the Pass Creek footbridge and patrol cabin, after which the grade steepens and traverses avalanche swaths and rocky outcrops. The payoff is big country: broad meadows at Fifty Mountain with far-reaching views that are absolutely worth the work.

Who It’s For

Strong hikers and backpackers who are comfortable with a long, remote corridor and sustained climbing. If you’re short on time or not up for the full effort, sample the valley from Goat Haunt to Kootenai Lakes and back for a lower-commitment taste.

Best Time to Hike

June through October is the usual window. Snow can linger near Fifty Mountain into early July, with drifts in the last couple miles not uncommon. Early season can also bring robust mosquitoes down low. Summer visitation is high across the park—start early for cooler temps and more breathing room.

Logistics and Access

North access is via Goat Haunt at the south end of Upper Waterton Lake, typically reached by boat from the Canadian side; plan ahead for travel documents and current procedures. South/connected access comes via the Highline/Flattop network to Fifty Mountain when the road to Logan Pass is open. Going-to-the-Sun Road opening is snow-dependent, and in some seasons vehicle reservations are required. If you’re backpacking, backcountry permits are required for designated sites like Fifty Mountain and Kootenai Lakes, and fires are not allowed at those camps. This is prime grizzly country—carry bear spray, make noise, and follow all food storage rules. Bring a paper map and be self-sufficient; it’s a long, remote corridor where conditions can change quickly.

Tips

• Break up the climb with the short side trip to Kootenai Lakes—great wildlife odds.
• If you want bigger objectives, link Stoney Indian Pass or continue via the Highline for a classic multi-day.
• Expect few views for many miles—save gas for the final ascent where the scenery truly opens.