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Thunder Lake Trail

Intermediate/Difficult
 4.4 (20)

A steep trail leading to two lovely alpine lakes.


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Map Key

5.0

Miles

8.0

KM

80%

Runnable

11,630' 3,545 m

High

9,439' 2,877 m

Low

116' 35 m

Up

2,304' 702 m

Down

9%

Avg Grade (5°)

53%

Max Grade (28°)

Dogs No Dogs

Features Birding · Commonly Backpacked · Fall Colors · Lake · River/Creek · Views · Waterfall · Wildflowers · Wildlife

Description

From the Wild Basin Trailhead, follow the trail to a junction with the Bluebird Lake Trail and Thunder Lake Trail - keep right to start up the Thunder Lake Trail.

The trail climbs up the North Saint Vrain Creek drainage between Mount Orton and Mahana Peak. The initial grade is manageable, but it steepens significantly after about one mile. As you continue paralleling the North St. Vrain, the trail ascends higher up the drainages northern wall flank.

At about 1.75 miles in, the Lion Lake Trail will branch off to the right (north). Continue on the Thunder Lake Trail for roughly one more mile and you'll crest a ridge before descending slightly to the shores of Thunder Lake.

Enjoy the views of the lake and decide whether to continue on, or turn around. The next portion of trail leading to the Lake of Many Winds is certainly the most difficult. However, this beautiful alpine lake is a fraction of the size of Thunder Lake and sits directly below Boulder-Grand Pass - beautiful.

Contacts

Shared By:

Brian Smith

Trail Ratings

  4.4 from 20 votes

#3

in Wild Basin

#439

Overall
  4.4 from 20 votes
5 Star
55%
4 Star
30%
3 Star
10%
2 Star
5%
1 Star
0%
Trail Rankings

#3

in Wild Basin

#86

in Colorado

#439

Overall
6 Views Last Month
3,902 Since Jan 15, 2015
Intermediate/Difficult

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11%
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Photos

West Shore Thunder Lake with permission from ottomandude
Jan 15, 2015 near Grand Lake, CO
A view of the ranger hut on Thunder Lake.
Jul 2, 2019 near Grand Lake, CO
Boulder Grand Pass from Lake of Many Winds. The "trail" is on the right side of the pass.
Jul 13, 2019 near Grand Lake, CO

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Check-Ins

Oct 16, 2022
Trevor Edie
Used to get to Lion Lake Trail. 2mi
Jun 17, 2018
Benjamin Tolomeo
Easy, steady ascent to the lakes.