The Tenmile Range is an extension of the Mosquito Range, both part of Colorado's Rocky Mountains. The ranges are demarcated by the Continental Divide, with Tenmile on the west side. Peak 1 and Quandary Peaks serve as the northern and southern most boundaries of the range. Several of the higher numbered peaks in the range mark the upper boundary of Breckenridge ski resort. The range is ~11.8 miles in length from the summit of Mt. Royal (subpeak of Peak 1) to the summit of Quandary Peak.

Depending on the peak and season you may find a line of peakbaggers or see not another soul. Ed F has an interesting write-up on the history and geology of the range.

Peaks include:

Mt. Royal (10,502 feet), subpeak of Peak 1

Mt. Victoria (11,785 feet), subpeak of Peak 1

Peak 1 (12,805 feet)

Tenmile Peak, aka Peak 2 (12,933 feet)

Peak 3 (12,676 feet)

Peak 4 (12,866 feet)

Peak 5 (12,855 feet)

Peak 6 (12,573 feet)

Peak 7 (12,655 feet)

Peak 8 (12,987 feet)

Peak 9 (13,195 feet)

Peak 10 (13,633 feet)

Father Dyer Peak (13,615 feet)

Crystal Peak (13,852 feet)

Mt. Helen (13,164 feet)

Pacific Peak (13,950 feet)

Fletcher Mt. (13,951 feet)

North Star Mt. (13,614 feet)

Wheeler Mt. (13,690 feet)

Quandary Peak (14,265 feet)

See a bat on a route, give a shout. Bats have been reported as high as 12,500'. Climbers for Bat Conservation is working with climbers to understand bat ecology and why bats choose certain cracks and flakes. If you see bats, and want to tell them, here is their email (climbersforbats@colostate.edu) and their website ( climbersforbats.colostate.edu/).

Climbers for Bat Conservation is a collaboration between climbers, bat biologists, and land managers to understand where bats roost and where large populations may reside. They are interested in finding bats because a new disease, called white-nose syndrome ( whitenosesyndrome.org/), has killed millions of bats in North America. This collaboration has identified bat roosts throughout the U.S., and as far away as Norway and Bulgaria. CBC was developed by biologists who climb and they are advocates for climbing access and bat conservation. If you see bats while climbing, please let them know by emailing them at climbersforbats@colostate.edu, or visiting their website to learn more ( climbersforbats.colostate.edu/).

Rob Schorr

Zoologist, Colorado Natural Heritage Program ( sites.warnercnr.colostate.e…)

Director, Climbers for Bat Conservation

Robert.schorr@colostate.edu