Celebrating 30 Years!

SORBA is the most effective nonprofit mountain biking organization in the Southeast
Join SORBADonate to build more trails


With over 40 chapters in 7 states, we are the largest nonprofit mountain biking organization in the Southeast.



Our chapters & members build and maintain sustainable mountain bike trails for everyone to enjoy.

Donate to build more trails


We are dedicated to respecting the environment; building and riding trails respectfully.



Whether you’re an experienced rider or just starting out, we’ll connect you with the MTB scene.

Find places to ride

What is SORBA?

Since 1989, The Southern Off-Road Bicycle Association has worked to ensure that our public lands offer fun, challenging and sustainable mountain biking for all mountain bikers. As the leading mountain biking organization in the southeast, our mission is to create, enhance, and protect great mountain biking experiences in the southeast.

SORBA News & Events

National Mountain Biking Survey Launches

The National Mountain Biking Survey is now open and seeking the diverse opinions of America’s mountain bikers to understand their habits, access to trails and levels of engagement. Between August 20 and September 20, anyone and everyone who rides a mountain bike—from...

Upcoming Events

8:30 am Morning Marsh Madness, Skidaway ...
Morning Marsh Madness, Skidaway ...
Oct 20 @ 8:30 am – 3:30 pm
Morning Marsh Madness, Skidaway Island, Savannah, GA @ Skidaway Institute of Oceanography | Savannah | Georgia | United States
What Is This Madness? Two Family Friendly Events for the price of One! Come enjoy the Early Bird off-road race at 8:30 AM and race one, two, or three laps depending on your skill level.[...]
8:30 am 2018 SORBA Fall Fat Tire Weekend...
2018 SORBA Fall Fat Tire Weekend...
Nov 9 @ 8:30 am – Nov 11 @ 3:00 pm
2018 SORBA Fall Fat Tire Weekend & Meeting @ Thomas C. Kelly Administration Center
TICKETS/REGISTRATION Join fellow Board members, Executive Board members, chapter members and staff for the 2018 SORBA Fall Fat Tire Weekend & Board of Directors meeting to ride, enjoy local amenities, hangout with fellow mountain bikers[...]

The Power of Membership

SORBA uses the word association in its name for a reason. We’re a formal group of like-minded people who want to ride their mountain bikes and have a great time doing it. Individuals are the heart of our organization, but one person can’t do it alone. We’ve come together, as an association, to be stronger, to have our voice heard. And we have been heard. Just look around the region at the great trails and strong chapters we have, and you know it’s working.

Your membership makes all trails possible.

Members also enjoy special deals, programs and discounts.  Find your local chapter today and learn more about becoming a member.

SORBA Partners

The following Fat Tire Sponsors support SORBA’s work. Please support these companies and encourage others to get involved. Thanks to our sponsors! For a full list of sponsors and partners click here.

Support Mountain Biking

Join or donate to SORBA and support mountain biking in the Southeast. Our members are more than just people who ride mountain bikes. We're passionate, concerned individuals who love the peace, beauty, ruggedness, and challenge of the trail. We are making the world better place for mountain biking.

Join SORBA or Renew

Through our partnership with the IMBA Local program, joining SORBA is a very easy process. Just select your local chapter on the signup form, and you'll become a member of SORBA through your local chapter.

Donate to SORBA

Your donations to SORBA help us carry out our mission of making great places to ride your mountain bike. As a 501(c)3 non-profit organization, all donations to SORBA are tax deductible.