Ironman 70.3 Muskoka takes place in Huntsville, Ontario. Hosted at the beautiful Canada Summit Centre
World Triathlon Corporation (WTC) is a Tampa-based company recognized for athletic excellence, distinguished events and quality products. WTC’s ever-growing portfolio includes Ironman, Ironman 70.3, Ironman Executive Challenge (XC), Iron Girl, IronKids brands and 5i50, which have a combined total of more than 100 events worldwide each year. The WTC family of brands has been featured in a range of.
09/01/2026
General registration for IRONMAN 70.3 Muskoka is OPEN 🔥
🗓️ Race day: Sunday, July 18, 2027
Are you ready to take on Muskoka?
Register here: https://www.ironman.com/races/im703-muskoka/register
02/27/2026
Race day energy is unmatched 🔥
Big smiles. Bold poses. Even when digging deep, you still show us how to have a little fun on the course (and we wouldn’t want it any other way 🧡).
02/05/2026
It’s official! IRONMAN 70.3 Muskoka is SOLD OUT 🔥
For everyone who snagged a spot, enjoy the training journey, and we’ll see you at the start line on July 5 for an epic race!
While there’s no waitlist or transfer option for this race, Muskoka isn’t going anywhere. If this wasn’t your year, we can’t wait to welcome you back to the start line in the seasons to come 💪
02/03/2026
🚨 Only 60 individual entries left! 🚨
This is it. Your final chance to race IRONMAN 70.3 Muskoka 2026.
Once it’s sold out, it’s sold out. No waitlist. No transfers. Just now or never.
📆 July 5, 2026
📍 Muskoka, Ontario, Canada
Secure your spot: https://www.ironman.com/races/im703-muskoka/register
01/31/2026
Volunteer sign-up for IRONMAN 70.3 Muskoka is officially live 🙌
This event wouldn’t be possible without our amazing volunteers. From registration to the finish line and everything in between. View the sign-up page to explore available positions and pick what fits you best to get your up-close experience of the race.
Sign up here: https://www.ironman.com/races/im703-muskoka/volunteer
01/21/2026
Quick update for anyone who was eyeing the IRONMAN 70.3 Muskoka relay 👇
❌ No more relay spots
❌ No wait list
✅ A limited number of individual race spots still available
If you’re already registered, we can’t wait to see your team take on Muskoka. If you missed out this year, keep an eye out for next year as relay spots go fast, or consider jumping into the race solo with one of the remaining individual entries!
06/25/2025
We are counting down the days until race day! In case you missed it, the pre-race email along with a link to the athlete guide, can be found here: https://conta.cc/4ej2fct
We can't wait to welcome everyone to Huntsville next weekend!
Pre Race Email Email from Subaru Triathlon Series Check out your race number + Volunteers Needed The 2025 Lake of Bays Brewing Co. IRONMAN 70.3 Muskoka July 6, 2025 Visit our Website Welcome to the Lake of B
04/04/2025
Make it a "race weekend" for the entire family! Registration for the IRONKIDS fun run on July 5th is now open.
https://regca2.ironman.com/event/2025-jordan-engineering-ironkids-fun-run
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