Roaring Fork Mountain Bike Association (RFMBA)

Dedicated to creating and sustaining the best possible mountain bike trail system in the Roaring Fork Valley.


Direct Donations

Donate Today!

RFMBA accepts Direct Donations by good old fashioned Checks, online via PayPal, or with your cryptocurrency (bitcoin, Ethereum) through Engiven.  We welcome individuals, families, and foundations to support our mission based work throughout the summer riding season, and the winter planning season!

Significant support for programs that increase volunteer stewardship, like our Trail Agent & and Bike Giveaway Volunteer Incentive Programs, or increase the size and effectiveness of our Seasonal Trail Crew Program, or generous support for specific trail construction projects… directly impact our effect on local communities.  Major donations may be directed in part towards specific projects and programs.

Please consider filling out the below Donation Form to ensure we have your current contact information.    You can make checks payable to RFMBA (or New Castle Trails if that is your focus!) and mail to RFMBA, PO Box 2635, Aspen, CO 81612.  If using Paypal buttons below, you can (optionally) mail this form to info@rfmba.org

RFMBA_DirectDonation and PledgeForm

You can make a One-Time (tax deductible) donation to RFMBA.  You will be redirected to PayPal’s secure server to complete your transaction.


Ready to support RFMBA with your $10, $20, or $40 monthly (tax deductible) contribution?  Use your Paypal account & the Subscribe button.

RFMBA Recurring Donations


Tech savvy? You can now make a One-Time (tax deductible) donation with your cryptocurrency (bitcoin, Ethereum) to RFMBA through Engiven.  By clicking the below Donate button, you will be redirected to Engiven’s secure server to complete your transaction.

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Our Mission:

The Roaring Fork Mountain Bike Association is dedicated to creating and sustaining the best possible mountain bike trail system in the Roaring Fork Valley. Our territory ranges from New Castle to Aspen and from McClure Pass to Hagerman Pass.

Your membership supports great local trails like Hummingbird, Vasten, Grandstaff, Prince Creek and more!

CLICK HERE TO JOIN/RENEW NOW!

Annual Memberships, Business Sponsorships and Donations help RFMBA accomplish great things for trails and the mountain bike community! Your Membership helps RFMBA to advocate for improving the trail system and increase our ability to partner on projects with land managers to maintain our existing trails and build new ones. In 2019 we are expanding our efforts to include a Seasonal Trail Crew and the an independent volunteer Trail Agent program to keep our trails in best possible condition! Thank you for supporting and aiding our efforts! Our Trails Check out MTBproject.com for existing trails in our area. This collaborative trail guide website currently shows many, although not yet all, of the best rides in our valley. Post your rides, photos, and trail conditions today! More ways to help: Use the following PayPal link to make a One-Time or Monthly-Recurring (tax deductible) donation to RFMBA. You will be redirected to PayPal’s secure server to complete your transaction.

News and Events

Sign up for important trail info

Trail closures:

Snowmass Village:

– Tom Blake, Aerobic Nightmare, Sequel, Government, Buttermilk Bowls trails and everything in the Bike Park (Opens June 21).

Our sponsors