42.195
Open entry
Registration status to be confirmed
📍 Llanberis (Eryri/Snowdonia), UK
© Hefin Owen from Wales · CC BY-SA 2.0
Snowdonia Marathon Eryri
marathontrailscenicvery hillyautumnmountainwalesiconic
Distances
42K
Profile
Very hilly
Surface
Trail
Slots
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Visa
Visa-free
Time limit
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Snowdonia Marathon Eryri has been run on the last Saturday of October since 1982, created as an alternative to city marathons and twice voted Britain's best marathon. The course circles Snowdon, Wales's highest mountain: up the Llanberis Pass to 335 m, down through the village of Beddgelert, a second climb to 366 m at Bwlch y Groes and a thrilling descent back into Llanberis. Wild mountain scenery, fickle autumn weather and Welsh support make the finish deeply emotional. Eryri offers the Snowdon Mountain Railway, Caernarfon and Conwy castles, lakes and slate-quarry heritage.
Course records
No course record data yet.
Weather in October
5–12°C
variable
Late October in Snowdonia is changeable; a mountain course around Snowdon.
Starter pack 2025
- bib with timing chip
- finisher medal
- technical t-shirt
- goody bag
Standard starter pack.
Pacers & bib pickup
No pacers announced for this race.
Bib pickup
Llanberis (Eryri/Snowdonia) race expo
day before the race only
Bib pickup the day before.
Registration opens
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Registration closes
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Current price
~€62
Status checked
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Course map
Route not added yet
What’s nearby
Dinner before the race
Carb-loading recommendation coming later.
After the finish
Airports
MAN · 150 min
Reviews
No reviews yet.
Registration status to be confirmed — check the organiser’s site