Race Courses and Maps

DIRTY THIRTY ULTRA XC MOUNTAIN BIKE RACE COURSE:

The Mountain Bike Race loop will be approximately 14.5 miles and include most of the trails at Blankets Creek. The trails will be ridden in a Counter - Clockwise direction this year, beginning with all of the Van Michael Trail (including 420 Climb and Kevorkian Pass), then Dwelling, then finally all of the South Loop Trail. The course will utilize the Rock and Roll Flow Trail, Chutes and Ladders and will retain the more advanced lines on the other sections of Dwelling.

Those entering in the Dirty 15 will complete one 14.5 mile laps, while those entering in the Dirty 30 will complete two 14.5 mile laps. Total elevation gain is about 1400' per lap.

Trail direction is Counter - Clockwise on Tues/Thurs/Sat for those looking to pre-ride the course. NOTE: YOU WILL NOT BE ABLE TO RIDE THE SOUTH LOOP ACCESS TRAILS IN RACE DIRECTION EXCEPT ON RACE DAY WHEN WE CAN CONTROL ACCESS. DON'T RIDE THE WRONG WAY ON THE TRAILS IF YOU ARE PRE-RIDING - FOLLOW THE DIRECTIONS ON THE SIGNS.

2021 Blankets Creek Dirty 15/30 Race Lap (Garmin Connect)

2021 Blankets Creek Dirty 15/30 GPX File Download

If you are pre-riding for the event, please check the SORBA Woodstock website for trail open/closed status before heading out.