The Sonoran Desert Mountain Bicyclists strongly supports all cycling opportunities (yes, even those road events!) in Tucson, Southern Arizona, and worldwide. We encourage safe and legal trail building through proper channels and communication. PLEASE do not take it upon yourself to re-route, sanitize, or build new trails. All trail work activities require the approval of the land managers and/or trail steward. By ignoring proper channels of communication, you risk the closing of trails to mountain bike use. Seriously. If you see a trail that needs maintenance or a re-route, contact us and we can get the ball rolling.


The Sonoran Desert Mountain Bicyclists is pleased to offer a yearly $1000 grant available to Pima County residents and organizations with the intent of bettering the local biking community. All submissions typically due by the end of June. All applications received will be reviewed by committee and the winner notified by the end of the following month.

Past Winners:

Keep an eye out on our homepage for the 2015 call for grants!


SDMB may not have actually BUILT Tucson’s 300+ miles of incredible singletrack, but we work hard to help keep it in shape, and support those who do as well. We work with local Forest authorities, land managers, other trail user groups, and the riding community to help keep the lines of communication open. In addition, we officially adopted Bug Springs trail, as well as two sections of the Arizona Trail. We provide tools and support for our local trail builders, purchase and install trail signage, and much more.

Read More About Trail Love…


The Sonoran Desert Mountain Bicyclists has sent a representative to the IMBA Summit in Washington, D.C. for a few years now, and we will continue to do so. Your membership dollars makes it possible to continue to keep our elected officials aware of and fighting for mountain biking rights.

Summit Recaps


It is well known that children who are active get better grades and stay out of trouble. We encourage and support the construction of bike parks to help bicycle enthusiasts of all ages improve their skills and volunteer to help learn about being part of a larger, more healthy community. There currently are two official bike parks in Tucson, one “grass-roots” park that is gaining support and momentum, and there discussion with the City for a more comprehensive park.

Read the latest on Tucson’s Bike Parks


The Urban Assault Ride™ is the biggest bicycle scavenger hunt series in the nation! SDMB has now participated (and is a beneficiary of) this fantastic event for three years running, and it continues to grow in popularity. The funds SDMB receives from this event go a long way toward helping us with our other advocacy efforts.

Read more about the Urban Assault …