Rocky Mountain National Park: Storm Pass via Boulder Brook Trail - Backpacker

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.

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