Executive Director 

Susie Murphy started riding mountain bikes in the early 1990's in order to follow her husband, Sean Murphy, who had taken up riding with their young daughter in a backpack. She just needed to keep on eye on them, but they soon discovered a family pastime that took them on many adventures. Some of their best times were camping at Sea Otter, traveling to races down in Baja, and going to 24 Hour races with all of their friends.

Susie's first race was in 1995 at Callaway Vineyards in Temecula.  She threw up in the first quarter mile and ended up coming in third. She won a Rock Shox hat!  Susie did her last race in 2005 and won the Am Cup Series Super D State Championship for women over 40 while her daughter won the same title for women under 18.  In between she entered a lot of sport division races in California, Arizona and Baja California and occasionally brought home some hardware. 

Susie has volunteered in the cycling community for many years with over 25 years with groups such as the San Diego County Bicycle Coalition, the Mountain Bike Assistance Unit at Cuyamaca Rancho State Park, Go Girl, the Trek Superstores Women's Team, Big Bear Women's Only Weekend and Girlz Gone Riding.  Now rides for her are a little slower (with a few lift rides thrown in), races few and far between, and bikepacking may be the new thing! 

Susie is thrilled to be the Executive Director of SDMBA, since late 2015. She finds meeting and learning from all the dedicated volunteers and land managers both locally and nationally amazing.  She learns new things every day about San Diego.  Susie gets to ride new trails and dream of even more as SDMBA works as a team to get things done to make mountain biking and trails better for everyone.

  • County of San Diego Parks Advisory Committee Member
  • Otay Valley Regional Park Citizen's Advisory Committee Vice Chair and Trails Subcommittee
  • California Mountain Biking Coaltiion - Board of Directors

Trails Coordinator

Ben Stone is a San Diego native, he found his interest in mountain biking later than most, but became involved in Advocacy during the first round of closures in Mission Trails East Elliott. He has brought his experience in working with other non-profit boards and running a small business to his position in the San Diego Mountain Biking Association. He has been our San Diego County Liaison for several years, has worked on the Mission Trails Master Plan, lobbying for approval of the 13 acre bike skills park in Deerfield, lobbying Federal, local authorities and private land managers for access to the historic Stowe Trail, worked closely with private developers to provide trails within their developments notably Fanita Ranch and Village 13, helped mediate a compromise in the Tijuana River Valley for access to trails that Mountain Bikers had been excluded from, and took over as Advocacy Chair in 2016. He continues to reach out to a variety of land managers to come and speak on a regular basis about local issues in San Diego relating to Mountain Biking. He also enjoys a good amount of trail work and rides regularly all over San Diego County.

  • San Dieguito River Park Trails Committee



Communications and Marketing Coordinator

Alex Oleata is a San Diego local with a passion for everything outdoors. After graduating college he was gifted a hardtail mountain bike from his younger brother, and that's where it all began. What started as casual cross-country riding quickly bled into Downhill, BMX, and Dirt Jumping. He's been involved in the cycling industry for years and has a love for all bikes from fixed gears to full suspension. Alex is excited to help engage the community, tell the SDMBA story, and create memories as the Communications and Marketing Coordinator. When he's not riding on two wheels you'll find him camping, surfing, or climbing a mountain. He's a regular at the Sweetwater Bike Park, so if you see him out there say "Hi!"

Trail Specialist

Michael, a San Diego local, has enjoyed biking, trail building, and pretty much anything outdoors since his days as a grom. In recent years he has spent time volunteering with SDMBA, building trails professionally in the Midwest, and working on a college degree with a focus in outdoor recreation. Michael is eager to dive deeper into the mountain bike trails industry and hopes to create fun and sustainable trails for the community of San Diego for years to come!