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Registration

Important info! We strongly recommend that you pre-register. We do offer race day registration until the race sells out, but we can't guarantee shirts or shirt sizes for runners who register after January 21. There's also a discount for those who sign up in advance, so why not save a couple bucks too?

2017 REGISTRATION IS OPEN ON ULTRA SIGNUP

No mail in registration:

Registration for the Ahmanson 12K Trails is by online only. We regret that we can no longer accept paper registrations for this event.

Other Registration Notes

  • Before you sign up, please be aware that entries are non-refundable, non-transferable to another person, and are non-deferrable to another year!
  • All previous Overall Champions are entitled to free race entry (subject to 20% administrative fee)
  • Race day registration is available from 6:00AM to 7:45AM or until race sells out; CASH only, no credit cards or checks please. Space is not guaranteed for race day registration. Shirts and goodie bags are not guaranteed to participants who register after February 12.
  • Race management reserves the right to refuse entry to anyone, for any reason.
  • Please read the "Race Rules" and "FAQs" before registering.
  • In addition to providing your name, address, etc., you will be required to sign a Waiver of Liability; please read the entire waiver before signing.
  • Completion of your registration will generate an auto-reply to your email account; please check your SPAM folder if it does not arrive in your inbox.
  • Runners must be 14 y/o or older to run this race.
  • Awards, medals, shirts must be picked up on race day; they will not be mailed.
  • The Ahmanson 12K Trails benefits a number of charitable and non-profit entities.

    • Associations

    Featured Sponsor

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