Back for its sixth year, we're challenging you to join hundreds of people across the country to swim 2.4 miles, cycle 112 miles and run 26.2 miles in one week.
Take part at the gym or outdoors, solo or as part of a team. When you want, where you want. Trisuit or baggy joggers. £6,000 bike or one you found at the back of your shed, state of the art trainers or scuffed plimsoles. A team of hundreds or team solo. Spread the distance for each discipline (swim, bike, run) over the week or aim to complete one discipline in a day (with a rest day in between)
Do as much or as little as you like and still call yourself a triathlete!
We can’t wait to have you on the team.
If you have any questions about your Will of Iron challenge, or if you'd like to take part at a different time, please get in touch with the team on firstname.lastname@example.org