Pre-Registration Only!

Knobby Tire Series supports community-based cycling and the associated health benefits.  We are Idaho’s premier State Championship 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!


All of our XC races are nationally qualifying events.