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Eden Marathon and Half-Marathon

Cornwall’s biggest running event, the Eden Marathon and Half-Marathon, returns on Sunday 20 October 2024, with a multi-terrain route through spectacular countryside. 

Entries are now open and will close on 30 September 2024 (or earlier if sold out).

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.

2024 Pricing

Standard entries:

  • Marathon: £42
  • Half-Marathon: £37

Early Bird entries:

  • Marathon: £37 (SOLD OUT)
  • Half-Marathon: £32 (SOLD OUT)

Why you'll love taking part

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

  • All runners get a pasty and a beer at the finish line – where else but Cornwall?!

  • All finishers get a themed medal to take home

  • Entrants and accompanying family, friends and supporters receive free entry to the Eden Project on the day

  • There'll be water stations every three miles and isotonic drinks every seven miles to fuel up!

  • Chip timing and free online analysis of your race will be available post-event via RunPix

  • There are cash prizes for race winners and prizes for category winners

  • You'll be supporting the creation of wildflower habitats here at Eden to help wildlife and pollinators thrive. This is our alternative to providing race t-shirts, as hundreds of them are not collected or not worn after events every year nationwide. If you would still like a souvenir t-shirt, you'll be able to purchase one through our sustainable, print-on-demand partners - more information will be available soon.

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…

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

2023 results

Well done to everyone who ran in the 2023 Marathon or Half-Marathon! 

You can see the 2023 results below:

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

A great, challenging course with excellent scenery.


“ A great, challenging course with excellent scenery. ”