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Runner at the Eden Marathon

Eden Marathon and Half Marathon

Cornwall’s biggest running event, the Eden Marathon and Half Marathon will return on Sunday 15 October 2023, with a multi-terrain route through spectacular countryside.

Registration is now open until 30 September or until all places are taken.

2023 prices

Early bird entries are now open and will close on 23 April (or earlier if sold out)

  • Marathon Early Bird: £34 (100 places available)
  • Half Marathon Early Bird: £29 (200 places available)

Full price entries will open on 24 April and will close on 30 September (or earlier if sold out)

  • Marathon Full price: £39 
  • Half Marathon Full Price: £34 

Race features

Here are just a few reasons why we think you’ll love the Eden Marathon: 

  • One tree will be planted at the Eden Project for each runner registered. Hundreds of T-shirts are either not collected or not worn after race events each year so once again we have taken the decision not to offer a T-shirt at this year's event and instead, will plant a tree sapling at the Eden Project for every runner registered. If you would still like to purchase a souvenir T-shirt of the event, these will soon be available to purchase. More details to follow.

  • Themed medal for all race finishers

  • Pasty and a beer for all race runners – where else but Cornwall?

  • Cash prizes for race winners and prizes for category winners

  • Free entry to Eden for runners and accompanying family members and supporters on the day.

  • Water stations every three miles and isotonic drinks every seven miles

  • Chip timing, and free online analysis of your race via RunPix

Run for Eden

Put your best foot forward and take on this challenge event to help the Eden Project address the challenges facing us all. Find out more about running for Eden this year.

Fantastic scenery, great organisation, where else do you get a pint and a pasty!


“Fantastic scenery, great organisation, where else do you get a pint and a pasty!”


Why we set up this Marathon

We created the course through Cornwall's dramatic Clay Country not only to offer a unique sporting experience for runners nationwide, but to showcase the unique region on our doorstep. The idea came from a conversation with the local St Austell Running Club, whose commitment, enthusiasm and passion have been invaluable in putting on the event.

The Marathon is just one of the many ways Eden aims to act as a catalyst for economic growth in the local region. If we could build this place, in a former clay pit, surely together we can all take on even bigger challenges…

Please check our FAQs page regularly for the latest information relating to the pandemic, as we will be updating in line with government guidelines.

Frequently asked questions

You can find all sorts of practical information below – and we also have a Marathon Facebook page where you can chat to other runners.

Route and terrain

Bookings and registration

Preparing for the day

On the day

After the day

About the Eden Marathon

A firm fixture in the running calendar, the Eden Project Marathon and Half Marathon offers hilly multi-terrain courses around the famous site, following a challenging route through areas of spectacular mining heritage and beautiful countryside landscapes.

2022 results

Well done to everyone who ran in the 2022 Marathon or Half-Marathon! 

See the full results via the links below:

You can also see a graphical analysis of your acheivement by following this link to RunPix

A great, challenging course with excellent scenery.


“A great, challenging course with excellent scenery.”