Summit Lake Loop Trail #1177

Follow this trail up to a lovely mountain lake and big views of Mt. Rainier.
Total Distance: 6.1 miles
Total Ascent: 1300ft
Highest Point: 5800ft
Difficulty: Moderate
Our Hiking Time: 2h 45m
Required Permit: Northwest Forest Pass
To get there, take I-5 South to I-405. From I-405 take SR 167 south toward Auburn. In 20 miles take the SR 410 Exit toward Sumner/Yakima. Follow SR 410 for 12 miles to SR 165. Take a right and continue on SR 165 for about 10 miles through Wilkeson and Carbonado to the Carbon River Road/Mowich Lake Road junction. Veer left onto the Carbon River Road and follow for 7.5 miles to FR 7810, just before the Carbon River Ranger Station. Turn left onto the FR 7810 and continue 6.5 unpaved miles to the trailhead at the end of the road. View Google Directions >>
From the trailhead, the Summit Lake Trail #1177 begins by climbing up through a young forest still recovering from a recent harvest. Soon find yourself entering more mature stands of fir and hemlock as the trail swings into a long switchback up the mountainside. The trail here is fairly wide and well maintained, though there are plenty of roots to trip you up if you’re not paying attention. After about a mile of trail reach a junction with the Carbon River Trail #1179 and Twin Lake. A short unmarked trail leads out to lonely Twin Lake, which lacks both a twin and the impressive landscape waiting at Summit Lake.

Push on from the junction to one of the steeper sections of the hike, following the trial as it quickly ascends the ridgeline. The grade soon becomes more reasonable, giving you time to enjoy the wildflowers that often line the trail, as well as occasional pocket views of Lake Lily hiding on the other side of the ridge. Roughly 2.5 miles from the trailhead emerge from the woods into the grassy meadows surrounding Summit Lake. Ahead of you the rocky prominence of Summit Lake Peak rises directly behind the lake and as you reach the lakeshore, Mt. Rainier looms large to the south. Settle in to enjoy the lake or press onward for bigger views.

If you’re up for more, the trail splits into a loop, winding around the lake and up to the top of Summit Lake Peak. Either way you go, there is often wildlife found in the meadows, including bear, deer, marmot and elk. The trail to the top is more challenging than the trail to the lake; it’s rough, steep and narrow, but the rewards are worth the extra effort. From the top, the deep blue of Summit Lake competes with the white flanks of Mt. Rainier. The closest neighbors are Bearhead Mountain to the west and Pitcher Mountain to the east, with Coplay Lake filling a bowl just to the right of Bearhead. Beyond that, an ocean of mountaintops spreads out in every direction, with far too many peaks to name. When you’ve had your fill, continue down the trail and complete the loop.

This is a fairly popular trail in the summer months, and it's easy to see why. The wildflower-filled meadows around Summit Lake are sure to please any fan of an alpine lake, and the big views from the top of Summit Lake Peak are more than enough to satisfy a devoted peakbagger. While it does have some elevation, most hikers will find this trail fairly accessible. And, with campsites available around the lake and more to explore along the Carbon River Trail #1179 and the Bearhead Mountain Trail #1179.1, this hike also makes for a decent backpacking destination.


Summit Lake is a glacially carved alpine lake situated at the upper end of the Cayada Creek Valley just inside the Clearwater Wilderness. The Wilderness was established in 1984 and now protects over 14,000 acres of old growth forest and wildlife. Records are a bit sketchy, but it seems likely that the Summit Lake Trail was first blazed by the Forest Service when building the fire lookout that was once perched on nearby Bearhead Mountain. Summit Lake serves as a excellent water source in the summer months, and the lookouts stationed on Bearhead Mountain would have been drawn to the picturesque setting of the lakeshore. Today, visitors flock to the Summit Lake to take in that same alluring mixture of meadow, snowcapped mountain and alpine lake.
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