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.
Trails Illustrated #100 Boulder/Golden
Rank & Prominence: Lists of John
Betasso Preserve | Bummers Rock Trailhead
From US 36 in Boulder
Betasso Preserve overview map
•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
Good map for the Betasso Preserve
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
Follow this simple, wide trail to the base of a pile of boulders, then ascent the boulders (YDS Class 2+) to the highpoint.
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
•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
Views from the summit
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.
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
From Bummers Rock
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.