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Dick Collins Firetrails starts and finishes at Lake Chabot Marina in Castro Valley, CA. The 100k course takes you to Cull Canyon Regional Park along Dinosaur Ridge all the way to the park entrance. You return to follow the 50-mile course. Only the 100k follows and out-and-back to Sibley Volcanic Preserve. You then rejoin the Firetrails 50 course on the NEW course out to Rancho Laguna.

For information on Pacers, Crew, Cuttoffs as well as the distance splits, visit 100k Aid Stations here. 

The Athlete Guide with turn-by-turn instructions and maps is here!

Click here for the GPX file.