Snowdonia Marathon
A mountain-road marathon out of Llanberis at the foot of Snowdon, with around 750 metres of climbing packed into one lap of the national park. Weather and terrain decide the day.
Where it runs
Interactive map
The trace follows the organizer's published course, simplified for the screen: the orange dot is the start, the dark dot the finish. Scroll to zoom, drag to pan.
About this race
A mountain-road marathon out of Llanberis at the foot of Snowdon, with around 750 metres of climbing packed into one lap of the national park. Weather and terrain decide the day.
- Next edition
- 24 October 2026
- Elevation gain
- 750 m
- Profile
- Hilly
- First run
- —
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About these facts
Dates, course type, climbing and time limits are compiled from the organizer's publications and re-checked each season; elevation is an estimate of total climbing rather than a survey figure. Always confirm race-day details with the organizer before making plans.
Last reviewed 28 September 2026