Otokomi Lake, Glacier National Park — A Two-Season Trip Report (July & May)

Otokomi Lake is one of those Glacier hikes that doesn’t get the hype of the big-name trails — and that’s exactly why I keep going back. It’s a steady, quiet climb up Rose Creek to a lake tucked into a vivid red-rock cirque below Goat Mountain. I’ve now hiked it twice: once in July 2025, and again over Memorial Day weekend in May 2026 — and the two trips were almost completely different experiences. Here’s an honest look at the trail in both seasons.

The Trail at a Glance

• Trailhead: Rose Creek Trailhead, at the west end of the Rising Sun Motor Inn parking area (~4,538 ft)
• Distance: ~5.5 miles one-way (≈11 miles round trip)
• Elevation gain: ~2,497 ft (lake sits at ~6,530 ft)
• Difficulty: Strenuous — and worth stressing: it’s uphill essentially the entire way to the lake. There are basically no downhill or flat recovery sections on the way up. That grind is the whole story of this trail.

The trailhead sign at Rising Sun — it lays out the stats and the story: the trail climbs through the aftermath of the 2015 Reynolds Creek Fire before its final sweep across the scree to the lake.

What the Hike Is Like

From Rising Sun the trail follows Rose Creek and climbs steadily through the burn zone left by the 2015 Reynolds Creek Fire. The standing dead trees open up the views — you get big looks back down the valley toward St. Mary Lake that you wouldn’t get in dense forest — and the burn has filled in with wildflowers, huckleberry brush, and new growth.

Looking back toward St. Mary Lake on the July climb — the open burn-zone forest makes for constant views as you gain elevation.

About two miles in there’s a creek cascade spilling over tilted slabs of red and green argillite — a good spot to catch your breath. The final stretch sweeps across an open scree slope of that signature vivid red rock, with the cirque and the lake opening up ahead. It’s the payoff section, and it’s gorgeous.

Rose Creek tumbling over the layered rock — the water and the colored argillite are a recurring theme on this trail.

July 2025: Fast, Green, and Full of Trout

In July I moved fast — I did the climb to the lake in about 4.5 hours round trip, which honestly is not a normal pace; don’t use that as your benchmark. The trail was dry, green, and wide open.

When I got to the lake, the water was crystal clear over that red bed, and there were trout everywhere — a ton of them cruising the shallows. And here’s my one real regret of the whole trip: I didn’t have my fishing gear with me. Watching all those trout and not being able to cast was painful enough that it became the reason for my second trip.

July at the lake: clear water over the red argillite bottom, with trout cruising the shallows — and the rod I left at home.

One July note: the bugs were thick up at the lake. If you’re going in summer — and especially if you’re camping — plan ahead for mosquitoes.

May 2026 (Memorial Day Weekend): Snow, Silence, and a Frozen Lake

I went back in May specifically to fish it. The hike itself wasn’t dramatically harder than July — slightly more difficult, but not by much — and the snow didn’t really slow me down until I got close to the lake, where there was still a lot of it. I had trekking poles, which helped, but honestly crampons or microspikes would have been really useful for that upper section.

Late-May conditions: the lower trail was clear, but snow took over as I neared the lake.

This trip took me closer to 6 hours, though I also spent more time exploring up and around the lake. And the fishing? The lake was still mostly frozen over. Between the ice and how cold the water was, I think the trout were all holding in deeper water — I didn’t connect. So the fishing quest continues; I’ll have to come back and try again.

Memorial Day weekend: the lake was still mostly iced over, ringed with snow, with the cirque buried under winter’s leftovers. Beautiful — but not great for fishing.

The flip side of early season: snow-capped peaks over the greening burn zone. A completely different mood than July.

Wildlife

I carried bear spray on both trips but never saw a bear either time. In July 2025 there was bear scat on the trail, so they’re definitely around — make noise. That same July trip I spotted a small bull moose close to the lake, and some deer down near the base of the trail by the Rising Sun Inn. In May I saw no wildlife at all — I think there was still just too much snow in the area.

(If you’re hiking here, it’s worth knowing how to handle a bear or moose encounter — see our bear and moose safety guide and how to watch wildlife safely.)

Logistics & Tips

• Parking depends on the season. In July I parked easily at the Rising Sun Inn. In May the Inn wasn’t open yet (it opens in June), so I parked at the boat/lakeside area across the road on St. Mary Lake and walked over to the trailhead.
• Early season = bring traction. If you go in May/early June, trekking poles plus microspikes or crampons will make the snowy upper section much easier and safer.
• Summer = bring bug protection. The mosquitoes at the lake in July were no joke.
• It’s a quiet trail. Both trips saw very few people — in May it was just me and maybe two other groups, around six people all day. If you want solitude in Glacier, this delivers.
• There’s a backcountry campsite up at the lake — something I haven’t done yet but want to on a future trip (it’d make the fishing far easier, too).
• Water: Rose Creek runs alongside much of the trail — bring a filter.

Who It’s For

Because it’s a steady, unrelenting uphill all the way to the lake, I’d recommend going all the way to the lake to moderate or better hikers — it’s a real climb, not a stroll. And I’d especially recommend it to anglers: that July trout sighting tells me this lake has serious fishing potential for anyone who actually remembers to pack a rod. (I’ll report back once I finally hook one.)

What I Carried

• Trekking poles — clutch on the climb both seasons
• Microspikes — what I wish I’d had at the lake in May
• Bear spray — non-negotiable in Glacier
• Bug head net & repellent — for July
• The Berkley Cherrywood 5'6" two-piece spinning rod — the rod I carry and recommend, and the one I will not forget again

Bottom Line

Otokomi Lake is a quiet, strenuous, hugely rewarding hike that rewards a second visit — the same red-rock cirque feels like two different places in July versus May. Go in summer for the green, the views, and the trout; go in late spring for the snow, the solitude, and a frozen lake under fresh-snow peaks (just bring traction). Either way, pack a rod. I clearly need to.

Related Guides

• Glacier National Park: Best-Kept Secrets
• Swiftcurrent Pass, Glacier NP — Trip Report
• Bear and Moose Safety
• The Complete Backcountry Layering System

Go Light. Go Far. Live Wild.