Beyond the Overlook
The short answer
Yes. If we could choose only one hike in Many Glacier, Grinnell Glacier would be it. It is a serious hike, but the payoff starts almost immediately. You get lakes, huge mountain views, a waterfall crossing, wildlife and the glacier itself instead of spending most of the day waiting for one final viewpoint.
The views start early
The trail begins around Swiftcurrent Lake, then continues above Lake Josephine and eventually gives you huge views over Grinnell Lake. It never felt like a hike where you had to suffer for hours before getting to the scenery.
Yes, you walk through the waterfall
Higher on the trail you cross directly through a waterfall. It was hot when we hiked, so getting sprayed felt refreshing. Expect wet rock and take your time.
The last climb is the hard part
The rocky switchbacks near the end were the section where we really had to power through. The trail is exposed and this is a serious mountain hike, so bring enough water, sun protection and bear spray, and check conditions before starting.
The glacier is worth the final push
At the top you reach the glacial lake below Grinnell Glacier and can get surprisingly close to the landscape you have been looking at all day. It is a great place to stop, recover and take photos before heading back.
Even though this is an out-and-back, the return did not feel repetitive. The lakes and mountains look different in the opposite direction, and later in the day we had some long stretches with nobody around us.
Go later if conditions allow
This trail can get extremely crowded. We hiked later in the day and found the descent much quieter. An evening start is only a good idea if you have enough daylight, know your pace and have checked current trail and wildlife conditions.
Wildlife
We saw a mountain goat during our Many Glacier hiking. Glacier is active bear country too, so carry bear spray where you can reach it and follow current park guidance.
Why this hike has such a high payoff
Grinnell is unusual because the scenery starts well before the final destination. The route stacks lake views, waterfalls, wildlife habitat and increasingly dramatic cliffs as you climb. That is why we call it our best bang-for-your-buck hike: even if the last climb feels hard, you have not spent hours walking through unremarkable terrain just to reach one viewpoint.
The final section is where the effort becomes most noticeable. It is more exposed to sun and the grade feels harder after several miles, but the glacier basin is a real destination rather than just a turnaround sign.
The boats can shorten the approach - but plan the logistics
Seasonal boat service across Swiftcurrent Lake and Lake Josephine can reduce some of the walking when schedules and tickets line up. We would view the boats as a logistics option, not a requirement. Hiking the lakeshore approach gives you more flexibility and keeps you from structuring the entire day around a departure time.
Wildlife and closures are part of Many Glacier
This is prime wildlife habitat. Bear activity can temporarily close trails or force route changes, and early-season snow can keep the upper trail closed after lower sections are already accessible. Carry bear spray, check the current trail-status report and do not assume that yesterday's route is open today.
If the upper glacier route is closed, the lower lakes still give you excellent scenery. We would rather adjust the day than force a route around a closure.
Our verdict
This was our best bang-for-your-buck hike in Many Glacier. The final switchbacks are tough, but the scenery is so consistent that the hike never feels like a long approach to one payoff. If we had time for only one big hike here, we would choose Grinnell again.