Bummers Rock

Page Type
Colorado, United States, North America
Hiking, Trad Climbing, Scrambling
Spring, Summer, Fall, Winter
6670 ft / 2033 m
2458 Hits
80.17% Score
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Bummers Rock
Created On: Mar 3, 2014
Last Edited On: Mar 3, 2014


From the top of Bummers Rock
From the top of Bummers Rock

“Bummers Rock” is a scenic little outcrop jutting southward toward the Boulder Creek drainage. It serves up anything from an easy family stroll through the woods to YDS 5.12 climbing. Nice views of the hills surrounding Boulder are available from the open, rocky summit, reached by an easy (Class 2+) scramble. This summit combines nicely as part of a day-outing to nearby peaks including Sugarloaf Peak or would be a nice place in and of its self to take small kids or out-of-state visitors.

Rank: Unranked
Prominence: 170 feet
USGS Quad: Boulder
Planning Map: Trails Illustrated #100 Boulder/Golden

Rank & Prominence: Lists of John

Getting There

Betasso Preserve overview map
Betasso Preserve overview map

Betasso Preserve | Bummers Rock Trailhead

From US 36 in Boulder

•Head west on Hwy 119 (Canyon Road)
•Drive approximately 6.3 miles to Sugarloaf Road and turn right
•Continue 0.9 miles on Sugarload Road then turn right on Betasso Road
•Follow Betasso Road for 0.6 miles to the Betasso Preserve
•Parking for Bummers Rock is on the right

Bummers Rock Trailhead
Bummers Rock Trailhead

Key Intersection
Key Intersection

Good map for the Betasso Preserve
Good map for the Betasso Preserve

Route Overview

Bummers Rock summit boulders
Bummers Rock Boulders
Looking up the trail
Bummers Rocks Route Map

There are several rock climbing routes on Bummers Rocks ranging from YDS 5.8 to 5.12. I encourage fellow SP members to add technical rock routes on Bummers Rock to augment this mountain/rock page.

For more information about rock climbing on Bummer’s Rock, refer the following book:

Rock Climbing Boulder Canyon
~ By Richard Rossiter

Walk-Up Route Overview

Roundtrip Distance: 0.8 mile
Elevation Gain: 134 feet
YDS Class: 2+

Follow this simple, wide trail to the base of a pile of boulders, then ascent the boulders (YDS Class 2+) to the highpoint.

Red Tape

No setting permanent pro
No setting permanent pro

In the People’s Republic of Boulder, the simple act of breathing is probably regulated, but rest assured you can stay within the good graces of the powers that be by adhering to the following regulations when visiting Betasso Preserve:

•Dogs must be leashed
•No bicycles
•Do not set permanent rock protection – this includes new and replacement placements
•Open space is open from sunrise to sunset
•Park in designated parking spaces only

When to Climb

Summit area of Bummers Rock
Summit area
From Bummers Rock
Views from the summit

Find more about Weather in Boulder, CO
Click for weather forecast
•Summer: Warm and dry, sometimes somewhat hot. Expect warm sunny mornings and afternoon thunderstorms, plus crowds.
•Winter: Winter days can be sunny, dry and warm, or sunny and clean and bitterly cold, or completely snow-covered.
•Spring: Variable, but snow can be deep following heavy storm events.
•Fall: Variable, but typically dry, cool and sunny.
Find more about Weather in Boulder, CO
Click for weather forecast


Per the Betasso Preserve website:

Camping is prohibited in all Boulder County parks and open space. The designated campground at Boulder County Fairgrounds Park in Longmont is the only exception.

If you are not a resident of the Boulder area, either visit for the day or plan on utilizing ample lodging options in town.
Summit area of Bummers Rock
Summit area of Bummers Rock

From Bummers Rock
From Bummers Rock

External Links

Logan on the summit
Logan on the summit

Please share with me via the Additions and Corrections sections any external information on Bummer’s Rock or Betasso Preserve that you wish for me to share here.