Crested Butte Mountain Runners, Inc. http://www.cbmountainrunners.org [email protected] Address:Crested Butte, CO - 81224-2107 RRCA IRS 501(c)3 nonprofit group exemption verified member. EIN on file with RRCA. Connect with Crested Butte Mountain Runners, Inc. Crested Butte Mountain Runners, Inc.'s twitter Crested Butte Mountain Runners, Inc.'s facebook Crested Butte Mountain Runners, Inc.'s instagram