Eden Marathon and Half
Mid Cornwall · Multi-terrain
Cornwall's biggest running event: clay-country trails and lanes looping the biomes.
Sun 18 Oct 2026 · Eden Project, St Austell
Confirmed · last checked 2026-07-12
- Date
- Sun 18 Oct 2026
- Distances
- Marathon / Half
- Entry
- Not yet open
- Price
- See organiser
What to expect
The marathon is roughly 70% trail and private road through the clay country; the half a little more road-biased. The climbing is honest without ever being coastal, and the finish between the biomes earns its photographs.
Train on the ground it covers
Routes from the directory on or near this race’s terrain, with mapped lines, elevation profiles and GPX downloads.
Mapped route line
Woodland
Cardinham Woods Loop
Forestry gravel and streamside shade: the loop for days the coast is unrunnable.
- Distance
- 9.5 km
- Gain
- 244 m
Desk-researched
Mapped route line
Coast path
Charlestown to Carlyon Bay
Tall-ship harbour walls to the long sands at Crinnis, on a cliff path that keeps it brief and honest.
- Distance
- 5.2 km
- Gain
- 160 m
Desk-researched
Mapped route line
Woodland
Golitha Falls and Draynes Wood
A short out-and-back to the Fowey cascades — a beauty spot more than a training run.
- Distance
- 3.5 km
- Gain
- 75 m
Desk-researched