Mountain Biking

WSMTB Logo

Westside Mountain Bike Series

BuDu Racing, LLC began promoting the West Side Mountain Bike Series in 2006 with just four events at South Seatac Park. The next year we added the Black Diamond Trails and kept adding locations after that. WSMTB has always been early season mountain bike series, mainly because of the BuDu event and timing schedule during the summer.