Register Now!

Clicking the button below will take you directly to the pre-registration page.

Register for Subaru Triathlon Series Races

The Subaru Triathlon Series is Ontario’s leading triathlon and duathlon series. We are proud of our sponsors:

Subaru Canada is a proud sponsor of the Subaru Triathlon Series PowerBar is a proud sponsor of the Subaru Triathlon Series Merrell is a proud sponsor of the Subaru Triathlon Series


You can now verify your race registration for all our Subaru Triathlon Series events. Simply click on the button to the right, fill out the fields and you'll automatically be able to see what races you are registered for.



To re-send yourself a REGISTRATION CONFIRMATION E-MAIL, Change your T-SHIRT SIZE OR Update your MEDICAL HISTORY/EMERGENCY CONTACT INFO please use this link.


Subaru Ironman 70.3 Muskoka Run Course Gets Easier!

We have modified the Subaru Ironman 70.3 Muskoka run course by taking out a few of the bigger hills! July22,2014 » Click to Read

Niagara Try a Tri filling up FAST!

Looks like the Niagara (Grimsby) Try a Tri is going to fill up. We have a few spots left but expect the event to sell out soon.

July20,2014 » Click to Read

Triathlon Ontario Club Championship

 Triathlon Ontario has tallied up the results of the Club Championship and announced the winners. Here is the news release. July14,2014 » Click to Read

IRON GIRL wait list now FULL!

We have reached our capacity for wait list with regards to Iron Girl! Response was much higher than we anticipated. See you in 2015!

July08,2014 » Click to Read SEE ALL NEWS


We've partnered with the Canadian Breast Cancer Foundation to bring Canada's first ever Iron Girl event! Join us at Nelles Beach Park in Grimsby, Ontario – just an hour away from Toronto and Buffalo – for a 500m shallow and safe swim – 20km flat and friendly bike – and a 5km spectator lined run course. It will be a picture perfect course starting in Lake Ontario, touring Niagara's farmland and finishing on the Waterfront Trail!

Click here to learn more

Ironman Muskoka 70.3