Challenge Events
Whether you're a keen marathon runner, a cross-country cyclist, or just starting out with a 5k run, we'll have an event for you. Browse the events below and take up the challenge for our city trees!
Featured Events!
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Brighton Marathon
2nd April 2023
Take on the Brighton Marathon and raise money for our city trees.
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Leeds Half Marathon
14th May 2023
Join thousands of people running through the streets of Leeds in Yorkshire's biggest half-marathon event.
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Hackney Half
21st May 2023
Sign up to secure your place in the Hackney Half 2020, East London's coolest and biggest running event of the year.
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Hull Half Marathon
12th June 2022
Join in with Hull's 3rd half-marathon and help plant trees in the city.
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Royal Parks Half
8th October 2022
Tour London's Royal Parks this autumn and raise money for a greener city
Find events in your area
We have places in hundreds of events across the UK and internationally! Find your area below to see what's coming up...
Run for the Trees
As well as the in-person events listed above, you can run your own virtual event for our urban trees around your local area - find out more here.