In the below video, the pair appear in caps and towels as they explain how people can take part in the iTRI challenge to raise money for Barnardo's...
The new challenge kicks off on June 1 and is free to enter. Rather than taking part in an organised race, participants will have the freedom to complete the set distances for running, cycling and swimming in their own time and at their own pace from anywhere in the UK. The new triathlon challenges fundraisers to swim 2.4 miles, cycle 112 miles and run 26.2 miles over the course of a month while raising sponsorship to help vulnerable children and young people.
Completed miles can be tracked using Strava and MapMyFitness apps or participants can manually log their workouts via their online profile.
Harry Peacock says: "The iTRI challenge is a brilliant way to support Barnardo's while challenging yourself at your own pace.
"Can't complete an ironman triathlon in one day? Not many people can! With iTRI you can spread it out over the course of a month while raising money to help support some of the UK's most vulnerable children."
Ricky Grover adds: "All you have to do is a little run here, a little cycle there and a short swim and you have the whole month of June to complete it.
"By the end you will have completed a triathlon, which is a real achievement - and you're really helping to transform the lives of children and young people in the process."
Barnardo's Chief Executive Javed Khan says: "Taking part in the Barnardo's triathlon is a fantastic opportunity to test your fitness whilst raising vital funds to help support vulnerable children across the UK. We'd love to get as many people as possible involved in this challenge."
To find out more visit barnardos.org.uk