Superpowering Superheroes with a super-sized fundraising mission

Sidekick Tri is a brand new mission brought to you by the team behind the Superhero Series powered by Marvel. The difference is that this time it’s for the Sidekicks!

On 14 August 2026 at Dorney Lake, Sidekicks will take on a Paralympic distance triathlon - 750m swim, 20km bike, 5km run - competing solo or as a team of three, all to superpower the Superheroes, with all funds raised going directly to support Superhero Sport Foundation.

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 on the mission? We’d love to talk, get in touch here.