Get Involved Our fundraising events Edinburgh Marathon 2020 The Edinburgh Marathon is the UK's fastest 26.2 mile route! The course is flat with a stunning backdrop of the beautiful city and glorious sea. The Edinburgh Marathon has sold out every year since 2008 and is the second largest marathon in the UK behind only London. By raising funds for the British Thyroid Foundation you will be helping to support people of all ages with a thyroid disorder. How to apply for the Edinburgh Marathon? Sign up below to register for place. We ask our fundraisers to pay a £30.00 registration fee and have a minimum sponsorship target of £450. Once you have registered we will send you a registration form asking for your details and if you would like a BTF t-shirt to wear on the day! Thank you for your support! Booking for this event has now closed.