The Treble Challenge

Show dementia what you’re made of with the Treble Challenge.

Challenge yourself to run, cycle AND swim between 1 April and 31 October. Finish the events indoors or out on the road, in any order, and over any distance you like – and raise money to fund life-changing dementia research. It’s the triathlon with a real difference.

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Which challenge will you choose?

It doesn’t matter if you’re a fitness fanatic or complete beginner, the Treble is all about setting and smashing your own targets.     

Pioneer: Swim* 10km, Cycle 500km, Run 100km

Epic: Swim* 30km, Cycle 1,500km, Run 300km

Maverick: Choose your own distance for each event!

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Tri kit for £50

Buy the Tri kit for a discount price (a swimming cap, running top, cycling jersey and neckwarmer) or raise £400 to receive it for free!


Pounds raised

Kilometres logged

Get involved for that feeling…

When you push yourself further

This is the ultimate chance to push your fitness to the limit. Brave the Epic Treble Challenge before 31 October, or set your own targets. Whatever distance you choose, you’ll feel amazing when you reach that goal!

When you boost your fitness

Get fit – without getting bored! With the Treble, you can try out three different sports and tailor your goals to the ones you most enjoy. Plus, it will keep your focus and motivation stronger than ever.

When you raise money for research

Every penny you raise will help us reach our goal of finding a life-changing treatment for dementia. And if you manage to raise £400, you’ll get a running T-shirt, swimming hat and cycling jersey thrown in too!

Top Fundraisers
Furthest distance this week
Weekly leaderboard of fitness activities. The leaderboard will reset on Monday each week.
Show your support on social media

Add an overlay to a picture of you to show your friends you’re fighting to bring down dementia.

1: Upload a photo
Step 2:Select an overlay