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SISU IRON 40+ Hour Endurance Race

Team Expedition
First Ever – Team SISU IRON Team of 4

If you do not have a team yet, you can sign up as a "free agent" and you can create your 4 person team later or you will be assigned to a team at the start of the event

DATE: Friday April 26th - Sunday April 28th 2024

Pre-registration Dinner - Mandatory 
Thursday April 25th 2024


The race starts sometime after the Pre-Registration Dinner, which is Thursday, April 25th 2024 which will be held at the Camp Trask Cafeteria. Full Competitor Gear List is required at Pre- Registration.


The gear list will be released throughout the year via email and the final gear list will be released before the event in the Athlete Guide, sent via email from your registration ticket.

Race Start
Start time will be released sometime during Pre- Registration Dinner 

Race Ends
Race end time will be sometime on Sunday, April 28, 2024.


Camp Trask: 1100 N. Canyon Blvd. Monrovia, CA 91016 

CAMPING: General Camping for the weekend is free. You will need your own tent and supplies for the weekend. Spots available on a first come/first-serve basis. Camping available Thursday morning April 25th – Monday, April 29th, 2024.

Ranger Station: Station: Shared conference room. Please bring a sleeping bag. Cots available, always best to bring your own comfort. Includes bathroom and kitchen. Excellent location, all gear, and items are kept safe for easy access $50/racer – 15 spots available.


PARKING:  All Racers, crew, and support must purchase a parking pass for the event. 100% of this fee goes to the campsite and benefits the scouts of America.

Premier Parking: $20 – Includes an entire stay at the event

Single Day Parking: $12 – General Parking location for single-day use




  • All racers receive one-of-a-kind SISU IRON swag, individual to each year. 
  • Finishers will earn the coveted IRON Spike
  • IRONMAN and IRONWOMAN awards voted on by the athletes
  • Squirrel Award voted on by Staff
  • Top 3 Team Award 


  • Headsweats
  • Team Rubicon
  • Trail Toes
  • Injinji
  • Honey Badger
  • The Running Warehouse



  1. Please read the entire information provided. Make sure you know what you are signing up for.
  2. No Transfers are allowed from previous races for the 2024 Race.
  3. We do realize that things can come up and keep you from making the race:
    A. A 60% refund will be allowed within the first 45 days of your payment.
    B. Post 45 days we will allow you to transfer to the next year for a fee of 50% of your registration.  If there is no future race or you do not wish to transfer there is no refund, expenses are pre-paid and any balance will be donated to the campsite.
  4. We DO NOT allow substitutions or transfers. The registration is only good for the person that registered.
  5. If the race is postponed because of Covid-19 or anything out of the race director's control all registrations will be forwarded to the final year. There are no refunds due to a cancellation or postponement
  6. Finally, if you do not show up and fail to arrange for a deferment that is a DNS. This will be a total forfeit of your entry fees.
  7. There are no exceptions to these rules.