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.

'Fantastic scenery, great organisation, where else do you get a pint and a pasty!'
Eden Marathon runner

Race features

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

  • Technical t-shirt, pasty and a beer for all race runners – where else but Cornwall?
  • Themed medal for all race finishers
  • 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

'A great, challenging course with excellent scenery'
Eden Marathon runner


Registration for the 2021 Marathon and Half Marathon is now open.

  Affiliated Non-affiliated
Half Marathon £30 £32
Marathon £35 £37

Find out about the automatic transfer of places from the postponed 2020 Marathon to the 2021 Marathon. 

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

What routes do the races follow?

View a route map of the Marathon and the Half Marathon.

What is the terrain like?

The course is a hilly, multi-terrain route, with the Marathon being roughly 70% on trails, paths and private roads and 30% on public roads. The Half-Marathon is 60% on public roads and 40% on trails and paths.

Get a taster of the course with these photos by Terry WyattMike Wright and Patto's Pics and video footage on Helman Tor by Terry Wyatt. 

What type of shoes would you recommend?

For those doing the Half-Marathon the off-road surfaces are generally good underfoot and specialist off-road shoes are not necessary. For those on the Marathon the surface is varied and could be wet and muddy, hence trail shoes would be recommended.

How is the route marked?

The route will be marked with direction signs and marshals will be posted at various locations.

How long do people tend to take to complete the course?

You can get an idea of the races by looking at the results from 2019:

Find out more about cut-off times for the Marathon in the section further down this page, marked 'On the day'.

Bookings and registration

When do entries close?

Registration will close by 30 September 2021 at the latest – earlier if all places are filled. 

What is the age limit?

To take part in the Marathon you must be 18 on or before the event date; for the Half Marathon you must be 17 on or before the event date. There is no upper age limit!

Do I need to be affiliated to a running club to enter?

Not at all. If you are you’ll get a discounted entry fee, but it’s not necessary.

Can I enter as part of a team?

As a club runner you can enter as a team; there are four runners to each team. Simply mention which club you're part of when you register and we'll allocate you to your team.

I can’t tell if I’m registered – how would I know?

When you register for either race you receive a confirmation email from the Eden Team via FR Systems. If you can’t find this, please check your junk mail folder in case it has ended up in there. If you’re stuck, please email eden@frsystems.co.uk

Can I have a refund if I have to withdraw from the race?

You are entitled to cancel your entry and receive a full refund of the fee, provided we receive written notice of cancellation within seven days of payment of the fee, as outlined in the terms and conditions. To do this please email eden@frsystems.co.uk or write to the Eden Project Marathon Event Administration, FR Systems Ltd, Unit 11, Evolution, Hooters Hall Road, Newcastle, Staffordshire, ST5 9QF. No refunds will be allowed after this seven-day cooling-off period.

Is it possible to defer my entry to the following year if I am unable to run for any reason?

You are able defer your place to the following year's event between 1 March and 30 September 2021. This will guarantee you a place in the 2022 Marathon or Half Marathon with a 10% discount on the entry fee. You will be sent a 10% discount code by email for the following year's event. Please email eden@frsystems.co.uk to do this, or write to the Eden Project Marathon Event Administration, FR Systems Ltd, Unit 11, Evolution, Hooters Hall Road, Newcastle, Staffordshire, ST5 9QF. 

Can I transfer my place to another runner?

Sorry, as stated in our terms and conditions, we are unable to offer any transfer of places for this event. Please be aware that using another competitor’s number will lead to disqualification

Can I transfer from the Marathon to the Half Marathon?

Yes. For the 2021 Marathon, if you need to transfer your place before 30 September 2021 you can do this by emailing eden@frsystems.co.uk. From 1 October 2021, please simply let us know on the day of the event itself and we can help you transfer races. You will not be entitled to any refund of the full Marathon entry fee.

Can I transfer from the Half Marathon to the Marathon?

Yes, it's possible to transfer to the Marathon until September 30 2021 – unless all places have already been filled. You can do this by emailing eden@frsystems.co.uk. You will need to pay the additional entry fee for the Marathon.

How do I change my booking details online?

If you change your email or postal address, please do let us know so we can keep in touch in the lead-up to the event, including sending you your race number and timing chip. To do this, visit the Marathon booking site and log in with the details provided in the email that accompanied your booking confirmation.

Preparing for the day

What sort of training would you recommend?

We suggest you take a look on the Runners’ Medical Resource website, where there’s all sorts of advice on training, drinking and eating. St Austell Running Club, which hosts the Marathon with us, suggests the following training:

A general Marathon training plan can be adapted to suit a multi terrain marathon like Eden. The normal requirements of building speed, strength and stamina are all relevant. When contemplating a multi terrain event like Eden, more of the training runs should be done off road to get the legs and ankles used to coping with uneven surfaces.

Introduce more hill repetitions to improve leg strength. We tend to find that this course takes something 20 to 30 minutes longer than a road marathon, so having the stamina to keep going that bit longer is important, so maybe add a few extra miles to a road training plan long run. The longest training runs should be about 20 miles, maybe going up to 22, as long as you can recover from the long runs to continue with the midweek training.

Can I run for charity?

Yes, great idea. Many people run our races to raise money for a cause. We’d recommend you set up a JustGiving page to help you raise awareness and collect funds online. If you'd like to raise money for the Eden Project to help us continue delivering our transformational projects, sign up to JustGiving through our Eden Project portal.

When will I get my race pack, race number and timing chip?

If you live in the UK, we’ll send you your race number and timing chip by post in early October 2021. If you are travelling from overseas you will need to collect your race number and timing chip from the Visitor Centre at Eden Project. These will be available from Saturday 9 October 2021.

Race packs for 2021 will be available to download nearer the event. We don't mail them out, to reduce our environmental impact. For a sneak preview, here's the race pack from 2019.

If your email or postal address changes in the meantime, please update this by logging in to the Marathon booking site

Can I book accommodation in the area?

There’s a YHA hostel at the Eden Project itself – housed in re-purposed shipping containers! Check out YHA Eden Project.

On the day

What time do the races start?

The Marathon starts at 9.30am and the Half Marathon starts at 10am. In your runners’ pack (available nearer the date) there are detailed instructions about what time to arrive for your race.

Are there cut-off times for the Marathon?

We have a strict cut-off time for the Marathon of five and a half hours. We have also set up interim cut-off times to ensure that runners make it around the course in a safe and timely way.

If you do not reach the seven-mile mark within one and a half hours you will be diverted to the Half Marathon course. You will receive a Half Marathon medal and t-shirt at the finish but will not be eligible for category positions in the Half Marathon.

If you do not reach the mile 13 (Lanlivery) within two hours 55 minutes, and mile 17 (Luxulyan) within three hours 30 minutes, you will not be allowed to complete the course and will be transported back to Eden. You will not be eligible for a medal but you will of course receive your t-shirt, pasty and pint.

There is no cut-off for the Half Marathon.

Are there drinks stations?

You bet – every three miles, approximately. And we're cutting down on single-plastic use by providing non-plastic recyclable cups at these water stations. There are also taps around the Eden Project site, where runners can fill their own water bottles before and after the race.

There’ll also be isotonic drinks at certain points: at mile 7 on the Half Marathon route, and at miles 7, 14 and 21 on the Marathon.

What are you doing about single-use plastic at the event?

This year we're drastically reducing single-use plastic at the event by not handing out water in plastic bottles or single-use plastic cups. We're using non-plastic recyclable cups instead. We're also encouraging runners to bring their own water bottle, which can be filled before and after the race from taps around the Eden Project. By doing this, we calcuate that we save around 2,500 plastic water bottles and 15,000 plastic cups each year.

Are there baggage storage facilities at the event?

Yes, there will be a baggage storage area where runners can leave their bag (one per runner) at their own risk. We do ask that you refrain from bringing large amounts of cash or valuables. There is a secure area for small personal items.

Are there showers available on the day?

No, unfortunately we don’t have any shower facilities.

Can I use my mp3 player or similar device during the race?

To comply with UKA regulations we do not permit the wearing of headphones or similar devices (other than those medically prescribed). This includes earphones which use bone technology. Any runner reported wearing headphones during the race will be disqualified.

How do I bring friends and family to support me for free?

Look out for the admissions voucher in your race pack (in October 2021), which entitles them to visit Eden during the day, as well as view the finish and prize ceremony.

What are the prizes?

As well as giving every runner a pasty, a beer and a t-shirt – and every finisher a medal – we’ll also be handing out a treasure trove of prizes at the end.

For the Marathon:

  • 1st male (£250); 1st female (£250)
  • 1st male veteran 40, 45, 50, 55, 60+
  • 1st female veteran 40, 45, 50, 55, 60+
  • 1st 3 male team (4 in a team)
  • 1st 3 female team (4 in a team)

For the Half Marathon:

  • 1st male (£200); 1st female (£200)
  • 1st male veteran 40, 45, 50, 55, 60+
  • 1st female veteran 40, 45, 50, 55, 60+
  • 1st 3 male team (4 in a team)
  • 1st 3 female team (4 in a team)

After the day

What happens next?

We’ll get in touch with the full results and a selection of photos of the day.

We’ll also invite you to explore a graphical display of your race day achievement on the RunPix website. There, you can enter your bib number or surname and choose either Marathon or Half Marathon on the drop down, and you'll be able to see your average speed and compare yourself with others.