Tarantula Half Marathon 10K 5K & Kids Spider Scramble

ATRA race member


Oct 10, 2020 at 8:00 AM

Tarantula Half Marathon 10K 5K & Kids Spider Scramble

100 Walnut Ave

Brentwood CA, 94513


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Entry Fee $39
(Lowest or Early Registration)

Entry Fee 2 $70
(Highest or Late Registration)

Prize Money: no


  • 10K
  • 13.1M
  • 5K
  • 1K

Type: Trail

Starting Elevation: 250

High Point: 1300

Percent of the course on un-paved trails: 100%

First Year of the Event: 2006


Be it on 8 legs or 2, get ready to traverse the hills of Los Vaqueros Reservoir! Brazen Racing is proud to carry on the poplular Los Vaqueros Tarantula Run on October 17th 2015! 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 there’s adventure for everyone!


No photos available.


Past Event Dates

Held on Oct 10, 2020

Held on Oct 12, 2019

Held on Oct 13, 2018

Held on Oct 14, 2017

Held on Oct 16, 2016

Held on Oct 17, 2015

Held on Oct 18, 2014