Pre-Registration Only!

Knobby Tire Series supports community-based cycling and the associated health benefits.  We are Idaho’s premier XC and Marathon mountain bike race series.  


We try to create a family -friendly environment so everyone can come out and enjoy a day on the trails.  


However, none of this would be possible without the generous support of our sponsors....so remember to support those who support You!


This year we’ve decided not to permit our events through USA Cycling which means racers no longer need the $75.00 annual license and no One-Day Licenses are needed.

Knobby Tire Series is super excited about helping the Idaho Interscholastic Cycling League!!!


The Idaho Interscholastic Cycling League was organized in 2014 to provide a fun, safe and high quality mountain biking program for students in grades 6 to 12. With the cooperation of our partners and our sponsors, we are able to provide a competitive mountain bike racing experience. Regardless of ability level, the Idaho League is committed to providing a positive experience for all student-athletes in accordance with NICA’s Five Core Principles: Inclusive, Equal, Strong Body, Strong Mind and Strong Character. In turn, Idaho’s goal is to create life-long cyclists who are conscientious, responsible and empowered