Runners will make their way around the trails and park roads around the Los Vaqueros Reservoir at Brazen Racing’s Tarantula Run Half Marathon, which starts and finishes at the Kellogg Creek Picnic Area. From there, the race follows what is roughly a clockwise loop along the trails of the Contra Costa Watershed, and is held during the time of year when the tarantulas native to this area are roaming in search of mates.
Note: The course map above provides the approximate route for the race. Though every effort has been made to ensure its accuracy, changes are sometimes made to race routes due to weather conditions, road closures or other circumstances that can require a course to be changed. If you see an error above, contact us here.