Grinnell Glacier Trailhead
Turquoise glacier lake in Glacier National Park with floating ice, snow-dusted cliffs, and hikers along the rocky shore.
Jagged gray peaks rise over a green valley with snow patches, a distant glacier in Glacier National Park.
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Grinnell Glacier Trailhead

Trails★★★★☆
Last Updated: December 2025
⚠️ Temporarily Closed

Overview

About This Trail

Grinnell Glacier Trailhead offers a challenging 10.6-mile out-and-back to Grinnell Glacier. The route features rocky ledges, scree, and exposure in the upper sections, with bear country a consideration. Start early or use the shuttle options to shorten the day.

Highlights

Difficulty Level

Strenuous

Hike If / Skip If

Ideal hiker: An experienced day hiker comfortable with long distances, elevation gain, and exposed ledges. Prepare for 10+ miles and up to 2,470 ft of gain, with rugged footing on loose rock and bear country nearby. Carry 2–3 liters of water, wear sturdy boots, and consider using shuttle services to shorten the day.

Trail Highlights

Close-up views of Grinnell Glacier, alpine meadows, glacial lakes, and distant peaks. High reward for the effort.

The Sweat Reality

Effort verdict: Strenuous; 10.6 miles round-trip with 1,600–2,470 ft of gain. Full hike typically 5–7 hours; a shortened 7.2-mile option is available via the Glacier Park Boat Company shuttle across Swiftcurrent Lake and Lake Josephine.

The Arrival Protocol

Parking strategy: The main Grinnell Glacier Trailhead lot is small and typically fills by 7:00 AM. Overflow parking is available along Many Glacier Road. With limited parking, the Many Glacier Shuttle is recommended. For a shorter route, use the Glacier Park Boat Company shuttle across Swiftcurrent Lake to Lake Josephine to shave miles. Restrooms: vault toilets at the trailhead and about 0.5 miles from Grinnell Lake.

The Payoff

Photo ops: Capture Grinnell Glacier and surrounding peaks from exposed ledges; sunrise over Swiftcurrent Lake and Lake Josephine from the boat shuttle; close-ups of scree and boulder fields on the approach; reflective lake scenes along Swiftcurrent Lake.

Insider Tips

• Use the boat shuttle to dramatically cut mileage • Start by 7 AM to secure parking and beat heat • Consider taking the boat one-way to reserve energy for the climb or for the descent • Bear spray and windproof layers are a must • Trekking poles help on rocky sections

Best Season to Hike

Mid-June through September

Hiking Tips

  • Carry 2 liters of water minimum
  • Bear spray and knowledge of use
  • Trekking poles for rocky sections
  • Layered clothing for changing mountain weather
  • Start cold and pace yourself

Family Info

Strenuous and long; generally not recommended for children under 10 due to distance, elevation, and hazards. Older, experienced children (10+) may manage with proper prep.