If you've registered on race-nation.co.uk before, sign in here
Sidekick Tri is an exclusive event created for Superhero Series Super Partners, Corporate and Charity Friends.
To take part, all participants must be registered as one of the above.
If you are not currently a Super Partner, Corporate or Charity Friend but would like to take part, please get in touch before booking to discuss eligibility.
Superpower Superheroes with a super-sized fundraising mission
Sidekick Tri is a new mission brought to you by the team behind the Superhero Series, powered by Marvel.
Designed for everyone, it gives participants the chance to take on a Paralympic distance triathlon, either solo or as part of a team of three, all while fundraising.
Created exclusively for Superhero Series Super Partners, Corporate & Charity Friends, Sidekick Tri takes place on 14 August 2026 at Dorney Lake, opening the Superhero Tri ’26 weekend.
Not currently a Super Partner or Charity Friend but want to take part? We’d love to talk — get in touch to find out more.
If you've registered on race-nation.co.uk before, sign in here