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:
Siskiyou Scenic Bike Ride
Greenhorn Gravel Grinder
Our next event will be May 18th and 19th of 2024. We are partnering with Yreka Rotary to put on a 2 day event. Saturday the 18th will be all pavement rides of 101, 67, 40 and 21 miles. Sunday May 19th will be 2 gravel rides of 63 and 39 miles. Come join us!
Tuesday Night Mountain Bike Ride
6:00 - 8:00 pm
Meet at Upper Greenhorn
This is a weekly no-host mountain bike ride on the trails of Greenhorn Park. Participants of all levels of ability are welcome. The route will be decided on the day of the ride.
Thursday Night Gravel Ride
6:00 - 8:00 pm
Meet at the Jefferson Bike Company
This is a weekly no-host gravel bike ride on mixed pavement, gravel and some of the trails at Greenhorn Park. Participants of all levels of ability are welcome. The route will be decided on the day of the ride.
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.