Who are we……
Jefferson Mountain Bike Association (JMBA) was formed in April of 2012. We are a local chapter of the International Mountain Biking Association (IMBA). Our mission is to preserve, produce and promote amazing biking experiences in the Yreka area.
Upcoming Events:
YMCA Mountain Bike Series 2024
June 4, 11, and 18th.
Racing starts at 6:00 pm. Upper Greenhorn Park
Join us for our 16th season of the Siskiyou Family YMCA Mountain Bike Race Series, a thrilling, competitive, and challenging event that will pump your adrenaline. The beautiful Upper Greenhorn Park in Yreka, CA, is the perfect place to spend your Tuesday evenings, experiencing the excitement of the races. This three-part series includes A, B, and C category races ranging from 3 to 10 miles. After each race, we celebrate with food, drink, and raffle prizes, adding to the thrill and excitement of the event.