two adults in swim caps adjust their goggles before starting another lap in the missoula ymca's indoor pool two adults in swim caps adjust their goggles before starting another lap in the missoula ymca's indoor pool

Details & Pricing

Iron Will Triathlon

All Ages

Participants have 45 days to complete a 2.4-mile swim, a 112-mile bike ride, and a 26.2 mile run. Modifications available and listed below. Each finisher receives a long-sleeve, dri-fit shirt.

Event Details:
  • Registration opens November 1 and is ongoing through the end of the year.
  • Participants may start tracking mileage annually on November 15. All mileage must be completed by 11:59 p.m. on December 31.
Cost:
  • $29 w/ YMCA membership ($49 for non-YMCA members)
Important Reminders:
  • Mileage Requirements & Modifications:
    • 2.4–mile swim (Modification: 12k row, 750 pullups, or 750 pushups)
    • 112–mile bike ride (Modification: 1,500 lunges—750 each leg)
    • 26.2–mile run (Modification: 26.2 miles walking or on the elliptical)
  • Submitting Mileage:
    • Download the mileage tracker below or pick a paper copy up at the YMCA Welcome Center.
    • Email completed trackers to healthandwellness@ymcamissoula.org by or before 12:00 p.m. on January 2, 2026.

What to Expect

Self-Paced Challenge

The challenge takes place over 45 days, allowing you to complete mileage on your own terms and schedule. 

Modifications Available

Looking for alternatives? Sub swimming for rowing, biking for lunges, and running for walking.

Prizes

Congrats on completing the challenge! Choose from an Iron Will Triathlon beanie or long-sleeve, dri-fit shirt.  

Iron Will Triathlon FAQs

No. The YMCA Iron Will Triathlon is open to YMCA members and non-members. 

Those wishing to use the YMCA facility to complete mileage must have an active YMCA membership or purchase a day pass. 

Become a Member

Day & Month Passes

No. While participants with active YMCA memberships or day passes are invited to use the YMCA facility, mileage may be completed anywhere. 

Become a Member

Day & Month Passes

Yes. Participants may complete the standard Iron-distance events or substitute part or all of the events for the following:

Modifications:
  • 2.4–mile swim modifications: 12k row, 750 pullups, or 750 pushups
  • 112–mile bike ride modifications: 1,500 lunges—750 each leg
  • 26.2–mile run modifications: 26.2 miles walking or on the elliptical

No. While participants have up to 45 days (November 15–December 31) to complete events, they may choose to take fewer. However, all mileage must be completed by 11:59 p.m. at December 31 to qualify for the prize. 

Our Iron Will Triathlon log automatically tallies your mileage. Simply enter your distance and let the log do the rest. Click the button above to download a log. 

Please note: The mileage log is built in Google Sheets and is a view-only document. To create an editable version for yourself, click File --> Make Copy OR File --> Download --> Microsoft Excel.

Congratulations! Email completed trackers to healthandwellness@ymcamissoula.org by 12:00 p.m. on January 2. Shirts and beanies are ordered in January and will be available for pickup at the YMCA by February.