Update 10/13/17: Please read our latest update concerning the race here.



Be it on eight legs or two, get ready to traverse the hills of Los Vaqueros Reservoir! Brazen Racing is proud to carry on the popular Los Vaqueros Tarantula Run on October 14th 2017!

The Tarantula Run was first held in 2006, organized to recognize the Contra Costa Water District's 70th anniversary and encourage visitation to the Los Vaqueros watershed. It's held in October, since that's the time when male tarantulas are usually roaming the watershed looking for mates. The run has plenty of excitement including the chance of tarantula sightings along the course! Add in a free Kids Spider Scramble for children 10 and under of half marathon, 10K and 5K runners and you have adventure for everyone!

Walkers/hikers and runners of all levels are welcome!

Age group medals will be awarded to the top 3 finishers in 5 year categories (less for the younger ages).

All races will be professionally timed.


Half marathon: 8:00 am

10K: 8:15 am

5K: 8:30 am

Kids Spider Scramble: 7:35 am

About Los Vaqueros Reservoir

Los Vaqueros is a nearly 20,000-acre protected watershed that offers outstanding fishing, challenging hikes and an opportunity to learn about the fascinating history of the area.

Contra Costa Water District's Los Vaqueros Reservoir was expanded in 2012, and can now store up to 160,000 acre-feet of high quality water for the District's customers.

Learn more about the park here.


Want to run with us, but can't make it in person?