No need for Arachno-FOMO!

Fun on eight legs or two!

ULTRA HALF RUNNERS: Only Two-legged results count!

** Online registration is now closed, but race day registration will be open at 6:45, so you can still join the fun! **

RUN AT THE RESERVOIR!

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!

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!

October 13, 2018

Day
Hour
Minute
Second

RACE DETAILS

RACE INFO

Everything you need to know.

COURSE

Nothing scary about these trails!

FAQ

Frequently asked questions.

RESULTS

Check out your race standing and finishing time here.

RACE PHOTOS

Provided for free by our volunteer photographers.

VOLUNTEER

Help your family and friends by volunteering!

Run the Rez on either eight legs or two!

Brazen Ultra Half Series Races

All half marathon runners are invited to participate in the Brazen Ultra Half Series.

The series consists of our toughest half marathons. Most measure at least a little (and sometime more than just a little) longer than 13.1 miles. What really makes them "ultra", however is the serious ascents and descents and variety of tough trails you have to run to finish them. While flat half marathons are always a challenge, these "ultra-half-marathons" take it to another level!

SPONSORS

Thank you to our race sponsors, through their contributions, our sponsors help keep entry costs down and expose our runners their outstanding products and services. Learn more about becoming a sponsor.

There is something about the ritual of the race, putting on the number, lining up, being timed, that brings out the best in us.
Grete Waitz