Gunsight Pass Trail

Overview

This is Glacier’s classic east-to-west traverse: a 19–20 mile point-to-point crossing of the Continental Divide twice (Gunsight Pass and Lincoln Pass) with constant eye-candy—turquoise lakes, waterfalls, wildflowers, and big mountain walls. Expect roughly 3,300–3,800 feet of climbing and a long final descent to finish. Many strong hikers tackle it as a 10–12 hour day; it’s just as good, and often more enjoyable, as a 2–3 day backpack using designated backcountry camps. Length varies slightly with start/end points and any side trips; plan on about 19.2 miles total for the full traverse.

Route Experience

Most people start at Jackson Glacier Overlook and hike west to finish at Lake McDonald Lodge for a net downhill day. The path rolls through meadows and forest to Gunsight Lake, then climbs steadily to Gunsight Pass—often with mountain goats on the slopes and a small stone warming hut at the crest. You’ll drop to Lake Ellen Wilson, climb again to the high point at Lincoln Pass, pass the Sperry backcountry camp and historic Sperry Chalet, then pound out the ~6-mile descent to the lodge. Optional detours include Florence Falls early on and a short, steep spur above Lincoln Pass for wider panoramas.

Backpacking vs. Day Hike

As a backpack, the go-to 2-night/3-day plan is: Night 1 at Gunsight Lake (GUN), Night 2 at Sperry (SPE), then exit to Lake McDonald Lodge. Backcountry camping requires a wilderness permit with site-specific itineraries—some released via an advance lottery and some saved for walk-up permits. Dispersed camping is not allowed. As a day hike, budget a dawn start, trekking poles, and plenty of calories; that final descent can be a knee-bender.

Logistics and Shuttle

Because it’s point-to-point, most hikers stage a vehicle at Lake McDonald Lodge and use the park shuttle to reach Jackson Glacier Overlook to start. You can also flip that plan—just build in shuttle transfer time and be realistic about your pace if you’re trying to make dinner at Sperry Chalet or a scheduled pickup.

Conditions and Gear

Snow lingers high well into summer. Early season can mean steep snowfields on the passes where traction and self-arrest skills may be necessary. Seasonal bridges can be out; that may force cold, swift fords. Dense vegetation between the east-side trailhead and Gunsight Lake is common. Weather swings are real—think frosty mornings up to hot afternoons and pop-up thunderstorms—so carry layers, a reliable rain shell, and insulation. Download maps for offline use, carry a topo, and bring a filter for plentiful flowing water. This is bear country: carry bear spray (every hiker), make noise, and follow food-storage rules at camps.

Best Time to Hike

Aim for mid-July through early September for the best shot at dry trails and installed bridges. Even then, check current pass and bridge status before you go. Start early for cooler temps, quieter lakes, and softer light on the east-side walls; by afternoon, you’ll appreciate being over the passes before any storms build.