Grinnell Lake Trail

Overview

A mellow, photogenic walk to one of Many Glacier’s prettiest lakes. From the standard start near Many Glacier Hotel, it’s about 7.8 miles total out-and-back with roughly 460 feet of gain on mostly gentle grades. If you’d rather keep it short, the boat shuttles across Swiftcurrent Lake and Lake Josephine trim the hiking to roughly 2 miles roundtrip with about 60 feet of gain—perfect for families and casual hikers.

Route Options

• Full hike: Trace the shores of Swiftcurrent and Josephine through shaded forest and open views, then take the short spur to Hidden Falls, cross the one-person-at-a-time suspension bridge over Cataract Creek, and continue on easy tread to the lakeshore. Expect boardwalks near the end and plenty of spots to linger.
• Boat-assisted: Ride across both lakes, then stroll an easy path to the lake. Add the quick Hidden Falls spur en route. Do note that return boats can fill; be mentally ready to hike back along the lakes if needed.

Highlights

Grinnell Lake sits in a dramatic mountain amphitheater, its opaque blue-green color fed by glacial meltwater. Waterfalls ribbon down the cirque walls, and the suspension bridge adds a fun change of pace. Hidden Falls is a short detour that’s absolutely worth the few extra minutes.

Season, Wildlife, and Conditions

Prime season runs summer into early fall. Early season can bring lingering snow patches or temporary closures for bear activity. Moose and bears (including grizzlies) frequent this area—carry bear spray, make noise, and give wildlife a wide berth. Mosquitoes can be feisty in warm weather; pack repellent. The lake is frigid even in summer; if you wade to sandbars, keep it brief.

Logistics and Crowds

Boat reservations are popular and recommended ahead of time. If you arrive at the junction right after a boat unloads, let the crowd move ahead for a quieter walk. Facilities exist near the docks but can be primitive and smelly—plan accordingly. In 2025, Many Glacier parking is heavily restricted due to construction; a park shuttle is operating and typically requires a ticket unless you’re a hotel guest or have a paid tour (like the boat). Always check current conditions and closures before you go.

Should You Hike It?

Yes—this is one of the park’s easiest big-payoff walks. It’s family-friendly, flexible in length, and offers classic Many Glacier scenery. Just know you won’t see the actual Grinnell Glacier from the lake; that requires the steeper, longer Grinnell Glacier Trail. If you want maximum views for minimal effort, stick with the lake and add Hidden Falls.