The ninth annual Eden Project Marathon and Half-Marathon are due to be run tomorrow.
The events will see a field of nearly 1,500 runners take on the challenging 13.1- and 26.2-mile courses, which snake through mid-Cornwall’s Clay Country.
Included in the field are runners from the USA, Switzerland, Germany and Belgium as well as homegrown Cornish comic Steve Heller, who will be running to raise funds for Children’s Hospice South West.