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Upcoming Events

Platte River Grill on the Platte River Trail to Chatfield Reservoir Loop
Fri, Oct 2, 2026

Bike – Platte River Grill on the Platte River Trail to Chatfield Reservoir Loop

We’ll ride a lollypop route south along the Platte River Trail from behind the Platte River Grill to Chatfield State Park, up onto the dam and around the reservoir, then back to the grill. Distance about 23 miles, pace about 10-12 mph. The ride up the dam is a good workout, both on the way out and on the way back. There is a gravel section of this loop along the east side of the reservoir that is not suitable for really narrow road tires. Optional lunch at the Grill after the ride.

Boulder Open Space
Fri, Oct 2, 2026

Rise and Grind – Boulder Open Space - Mount Sanitas

Mt Sanitas *SUNRISE FITNESS HIKE*

Apex Park
Sat, Oct 3, 2026

New & Prospective Member Hike – Apex Park

New and Prospective member orientation hike.

Red Mountain Pass
Sat, Oct 3, 2026

Hiking – Red Mountain Pass - Ironton Trail System

Fall colors hike at the Ironton Ghost town and mine area. New members/guests welcome. If trip is full, add yourself to the waitlist and we'll add another trip to somewhere in the area!

Leader in Training (LIT) Trip – Helmet Peak
Sat, Oct 3, 2026

Leader in Training (LIT) Trip – Helmet Peak

A short out-and-back that provides a unique perspective on the La Plata Mountains from the westernmost peak in the range. Huge views into the wide-open west from this humble peak out there all by itself. Helmet is the launch point onto a two-and-a-half mile ridgeline traverse to Rush Basin, a hidden high alpine cirque.

Updates from the Blog

September Updates from the CMC Conservation Crew

September Updates from the CMC Conservation Crew

Conservation Coordinator Joey Lancia shares updates from the seasonal Colorado Mountain Club Conservation Stewardship Crew.
Help Protect the Places We Love and Recreate

Help Protect the Places We Love and Recreate

Our public lands, both in Colorado and nationwide, need your voice right now.
How to Use Alpine Trail Runs to Train for Autumn Trail Races

How to Use Alpine Trail Runs to Train for Autumn Trail Races

As autumn approaches and trail race season gets underway, Annalise Grueter explores how alpine trail running and hiking at higher elevations can support your training. She shares her perspective on altitude, the benefits of training in Colorado’s high country, and several routes worth visiting this fall.