
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.
Strenuous
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.
Close-up views of Grinnell Glacier, alpine meadows, glacial lakes, and distant peaks. High reward for the effort.
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.
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.
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.
• 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
Mid-June through September
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.
Park entrance pass required. In the Many Glacier area (July 1–September 21), a reservation or shuttle ticket may be required; park entrance passes available at Recreation.gov or in person at the park entrance.
Many Glacier Hiker Shuttle requires advance reservations via Recreation.gov. Boat shuttles across Swiftcurrent Lake and Lake Josephine shorten the hike by about 3.4 miles; reservations for boat shuttles are highly recommended and often sell out in advance.
Carry bear spray and travel in groups. Thunderstorms can roll in quickly; stay alert for weather shifts. Expect sun exposure on exposed sections and slippery rocks near the glacier approach; the final ascent includes rock stairs and boulders with drop-offs.
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.
Vault toilets at trailhead and a quarter-mile from the glacier basin
Based on 256 Google reviews
Nomad Life
We got up at 4:30 A.M. to make sure we got a parking spot at Many Glacier Hotel, which is a National Historic Hotel of America, to hike to Grinnell Glacier. Make sure to use the bathroom at the hotel and bring PLENTY of water and snacks. My husband and I have never drank so much water on our hikes before. We brought 9 bottles and drank all of them by the time the hike ended and normally we drink 4-6 bottles total. We could have easily drank more, but wanted to make sure we had enough for the trip. We also brought sandwiches, granola bars, sunscreen, and bear spray due to the trail heavily being used by bears and the trail being exposed in the sun for 80+% of the time.The first 0.9 miles is ADA accessible since it is paved. We clocked 13+ miles of hiking even though the sign says it's only 5.3 miles one way with an elevation gain of 2,596 feet. It was rough. Mainly due to having to make sure you pick up your feet high enough for each step due to all the rocks on the trail. We were being tripped up by them several times throughout the hike and saw many others almost take a tumble. We did bring our poles, which we used and we stretched the morning of. However, when we were hiking back, that is usually my time to shine. Descending on a hike I find so easy and able to do efficiently, but this time, my feet, knees, lower back, and ankles were sore. I've never dealt with sore ankles on a hike before, but it was probably from all the balancing on the small rocks you have to step on. There are log steps, and steep stone stairs on this trail. Along the trail, you hike beside Swiftcurrent Lake, Lake Josephine, which I highly recommend going to the dock area to feast your eyes on the beautiful reflection in the lake with the mountains and pine trees, and then you start to go up the mountainside and can see Grinnell Lake below before you get to Upper Grinnell Lake. Honestly, we enjoyed the views of the 3 lakes from above more than we enjoyed the final destination. This could be because we did Alaska recently and have seen a bunch of glaciers and even did a 3 hour hike on one, so the views there were better. Still, if you've never hiked to a glacier, I am sure you will be blown away because a girl, probably in her early 20s, said to us, "this is the most beautiful thing I have ever seen!" We were so happy for her! It is COLD up there, so bring winter gloves, a beanie, and a hoodie to help with the cold. Luckily, we came prepared. This hike took us about 7.5 hours. We took a lot of breaks.Wildlife sightings: Right before getting to Lake Josephine, there was a HUGE bull moose and cow moose a little off the trail in the woods. We might have missed it if people weren't taking pictures. We couldn't believe the size and heard the female moose whining. Then we saw a mountain goat on the way back from Grinnell Glacier napping on the red rock face. He looked like a white blob from afar, but closer up, you could see him better. We saw several squirrels and chipmunks and maybe even a pika. As we were driving out, before we left the park, we did see a Big Grizzly munching in the field and a black bear cub munching on a tree right off the side of the road. Do NOT block traffic. The Ranger got pissed at the people who stopped traffic at both ends.We did meet a lovely older couple that we hiked back with and shared great conversations with. We hope their future endeavors bring them all good things in life. (Follow us on TikTok for ideas: nomad.lifestyle)After our hike, we rewarded ourself with bison burgers and a drink. I got the Huckleberry Smash (very good) and my husband got the Mountain Man, a Scottish Ale, which was also really good. The burgers came with fries at no extra cost, unlike Eddie's Mercantile in Agar Village, and the service was unbelievably fast. Not a bad place to stop to eat. Tad pricey though. Also, the one complaint we do have about it, is that the music they played wasn't always family friendly. They played the unedited version of "My Humps" by Fergie, which includes curse words and the obvious innuendo.
shambhavi kulkarni
What an amazing hike! It’s about 11 miles round trip, and you get beautiful views the entire way. The distance might seem a lot, but the elevation gain is moderate, which makes it very manageable. Definitely a must-visit if you’re in the area
Anu MahapatraGupta
What a beautiful gift from Nature ! We could not get the boat tour tickets as those were sold out , therefore had to hike 12 miles . I will do it again if I have the chance ! The views were breathtaking . Took us 7 hour round trip , but we spent 45 min at the top
Showing 3 of 256 reviews
Yes. Travel in groups, make noise, and carry bear spray; store food properly and stay alert.
Yes. The Many Glacier Hiker Shuttle requires advance reservations via Recreation.gov. Boat shuttles across Swiftcurrent Lake and Lake Josephine can shorten the hike; reserve early as they sell out.
Not ideal for beginners. It’s long and strenuous with exposed sections and potential hazards. Proper conditioning and gear are essential.
A park entrance pass is required; in the Many Glacier area, summer reservations or shuttle tickets may be required.
Sturdy boots with grip, trekking poles, layers for mountain weather, sun protection, and bear spray.
Mid-June to early September is the typical window when snow is off the upper sections; conditions can shift fast with weather.
Start early, hydrate aggressively, and consider using the boat shuttle to preserve energy for the ascent and descent.
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