Boulder Grand Pass and Thunder Lake Trail

MODERATE 1 reviews
#185 of 196 trails in

Boulder Grand Pass and Thunder Lake Trail is a 15.2 mile moderately trafficked out and back trail located near Allenspark, Colorado that features a lake and is rated as moderate. The trail is primarily used for hiking, walking, nature trips, and birding and is best used from April until September.

DISTANCE
15.2 miles
ELEVATION GAIN
3,750 feet
ROUTE TYPE
Out & Back

hiking

nature trips

walking

bird watching

forest

lake

views

wild flowers

hiking
9 months ago