Medium
Boulder - Grand Pass and Thunder Lake Trail
Boulder County, Colorado · 0.0 · 0 reviews · Login and be the first to review!
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What to expect
The Boulder - Grand Pass and Thunder Lake Trail is a 23.3 km
looped trail that starts and ends in Allenspark,
Boulder County, Colorado.
Based on our data, the trail is graded as Medium.
For information on how we grade trails, please click here.
Also, check our latest community posts for trail updates.
This trail can be completed in approx 3 days. Caution is advised on trail
times as this depends on multiple variables. For more info, click here.
Have you walked on the Boulder - Grand Pass and Thunder Lake Trail?
Trail stats
Trail length
23.3 km
Time
~ 3 days
Total Elevation Gain
1145 m
Total Elevation Loss
1145 m
Avg Elevation per KM
49 m
Max Elevation
