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 17th and 18th, 2025. We are partnering with Yreka Rotary to put on a two-day event. Saturday the 17th will be all pavement rides of 101, 67, 40, and 21 miles. Sunday, May 18th, will be two gravel rides of 63 and 39 miles. Join us!
Tuesday Night Mountain Bike Ride
Spring - Fall. Start date TBA
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
Spring - Fall. Start date TBA
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.