Rocky Mountain National Park: Storm Pass via Boulder Brook Trail
This rolling, 20.6-mile lasso, only a few miles from Longs Peak, climbs to views on Granite Pass, drops down Boulder Brook, then ascends to forested Storm Pass.
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INFO For information on permits, current trail and camp conditions, and wilderness guidelines, go to nps.gov/romo/planyourvisit/backcountry.htm
PERMIT A wilderness permit is required for all overnight camping in the backcountry. Reservations accepted ($20 administrative fee for permits during peak season). nps.gov/romo/planyourvisit/backcntry_guide.htm
CONTACT Rocky Mountain National Park, (970) 586-1206; nps.gov/romo
-Mapped by Tim Shisler
Trail Facts
- Distance: 33.1
Waypoints
STM001
Location: 40.306355, -105.537972
Hike south from the trailhead at Lily Lake.
STM002
Location: 40.304829, -105.54014
Bear left at the Y-junction, heading southwest.
STM003
Location: 40.300591, -105.545343
Go straight at the 4-way junction, and cross the bridge over Aspen Brook.
STM004
Location: 40.291998, -105.570202
Catch a view of Longs Peak as you near Storm Pass.
STM005
Location: 40.293066, -105.573742
Storm Pass: Turn left at the 4-way toward Longs Peak. The return route reconnects with the outbound route at this junction.
STM006
Location: 40.286908, -105.565009
Turn right at the 3-way junction.
STM007
Location: 40.286652, -105.56811
Campsite
STM008
Location: 40.284453, -105.571935
Pass Eugenia Mine, and cross Inn Brook.
STM009
Location: 40.27504, -105.564301
Turn right at the T-junction.
STM010
Location: 40.272812, -105.56985
Camp
STM011
Location: 40.273256, -105.58018
Cross a bridge over Alpine Brook.
STM012
Location: 40.270845, -105.584262
Turn right at the 3-way junction.
STM013
Location: 40.271741, -105.58887
The trail passes through Jims Grove before veering left on a westward climb to Granite Pass.
STM014
Location: 40.274058, -105.605478
Granite Pass: Turn right (north) at the 3-way junction.
STM015
Location: 40.289629, -105.603096
Descend below treeline.
STM016
Location: 40.286712, -105.610843
Hike through thick pine forest.
STM017
Location: 40.287858, -105.612774
Cross Boulder Brook.
STM018
Location: 40.288971, -105.617065
Bear right at the 3-way on Boulder Brook Trail.
STM019
Location: 40.291981, -105.61742
Camp
STM020
Location: 40.316725, -105.615799
Turn right at 4-way.
STM021
Location: 40.314871, -105.612186
Bear right at the Y-junction.
STM022
Location: 40.311321, -105.606916
Continue straight at the 3-way.
STM023
Location: 40.307285, -105.600072
Stream crossing
STM024
Location: 40.296042, -105.582961
The trail veers to the left toward Storm Pass.
STM025
Location: 40.293042, -105.573828
Continue straight at the 4-way to return to the trailhead.