Contact Us

Looking for information, have questions, or want to make a suggestion? You are in the right place.

Help & Support

  • Email: office@cmc.org. Our dedicated Membership Support team will respond as quickly as possible, typically within one business day. Please include as much detail as possible regarding your question or issue so that we can quickly get you a useful answer.
  • Phone: 303-279-3080 ext. 1: Support is available Monday through Thursday 10 a.m. to 6 p.m. and Fridays 10 a.m. to 2 p.m. except for holiday and other closures noted below.
  • Drop on by the office! We have staff on site ready to assist you with whatever you need Tuesday through Thursday 10 a.m. to 6 p.m. and by appointment on Mondays and Fridays. To schedule an appointment on Monday or Friday send a note to office@cmc.org.
  • Emergency incident reporting: 269-384-1056. Use this line in the event of an urgent issues encountered on a CMC activity. In a medical or other emergency where 911 is needed, please call 911 first.
  • Unacceptable Behavior: The CMC endeavors to be an inclusive place for all outdoor enthusiasts and has a zero tolerance policy with regard to harassments, discrimination, and other inappropriate behavior. If you see something, say something so it can be addressed immediately. Reporting options using our third party reporting provider (including anonymous reports) include the following:
  • Having issues with a book or merchandise order? e-mail the office at order issue e-mail. Be sure to include as much information regarding your issue as possible.
  • Want to help improve our organization: We are constantly striving to be and do better so if you have any feedback or suggestions on how we can better serve the community, please let our dedicated staff know by e-mailing them at our feedback and suggestions e-mail
  • Volunteer Leaders: Our volunteers are the core of our community. Visit our Leader Resources page for general leadership information or visit our volunteer opportunities page to find out how to get involved!

Headquartered at the American Mountaineering Center

710 10th St. Suite 200

Golden, CO 80401


Office Hours

  • Walk-in hours: Tuesday - Thursday 10 a.m.-6 p.m.
  • Appointments only on Mondays and Fridays e-mail us to schedule an appointment (appointment e-mail)
  • Our offices are closed for the following holidays:
    • New Year's Day
    • Martin Luther King Jr. Day
    • President's Day
    • Memorial Day
    • Juneteenth
    • Independence Day
    • Labor Day
    • Indigenous Peoples' Day
    • Veterans Day
    • Thanksgiving Day and the day after Thanksgiving
    • December 24th through January 1st

Visit the American Mountaineering Center for rental and reservations info.

For a list of all employees and their direct numbers and e-mail, visit our staff page.