| Registration |

Register Here!

Registration opens on March 20 at 12am MDT and closes on June 9 at 11:59pm MDT.

Early Bird
(thru April 30)

(May 1-June 9)

Race Day
(June 10)





Family (4 entrants)




Just Chillin’




Lazy Piggy




Volunteer Opportunities Available

There are several great volunteer opportunities for this event! These opportunities include course setup and tear-down, race-day registration and packet pickup, aid station management, start/finish line management, course marshaling, and much, much more! Please email Leigh at info@underwearness.org. All volunteers receive a wristband to the zoo for August 9 and a morning of fun.

Registration fees are non-refundable.