All Locations > Colorado > Boulder > Flatirons > South

Upper Blues Boulders Climbing

Climbing Area Map

Areas in Upper Blues Boulders

Atom Boulder 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0 / 0

Mamoonious 0 / 0 / 0 / 5 / 0 / 0 / 0 / 0 / 5

Zoofarsus 0 / 0 / 0 / 2 / 0 / 0 / 0 / 0 / 2

Use onX Backcountry to explore the terrain in 3D, view recent satellite imagery, and more. Now available in onX Backcountry Mobile apps! For more information see this post.

GPS:	39.95605, -105.28343 Google Map · Climbing Area Map
Page Views:	11,293 total · 55/month
Shared By:	Steven Lucarelli on Jun 28, 2007 · Updates
Admins:	Leo Paik, John McNamee, Frances Fierst, Monty, Monomaniac, Tyler KC Page Updates (admin only)

See Weather Forecast

Access Issue: 2024 Crag Closures & Temporary Trail and Raptor Closures Details

The usual crags are closed for climbing for raptor nesting:

See: bouldercolorado.gov/service….

Click here for the trail closures. Some are M-F, some are 24/7. These impact the Bear Canyon/Fern Canyon regions primarily:

flatironsclimbing.org/tempo…

Click here bouldercolorado.gov/service… for the latest in raptor closures.

Description

This secluded little bouldering area hidden in the woods of the South Flatirons is a great place to get away. Problems range from V0 to V8 on short to highball boulders with everything in between.

Getting There

The approach starts at the South Mesa Trailhead off of Hwy 170. Follow the South Mesa Trail north until you get to the Big Bluestem trail (about 20 to 30 minutes) and then follow this trail for about another 20 minutes staying left where it splits. When Big Bluestem T's into South Mesa again go right about 60 to 80 feet and then head up a gully to your left. There is no trail at this point and it is easiest to stay on the right side of the gully instead of directly in it. All of the boulders are located in or right next to this gully. This approach takes about one hour depending on what boulders your going to and watch out for posion ivy in the gully.