Snowdonia Marathon

28 October 2023

Start Time : 10:30 a.m.
Number of Places : 2,700

The Snowdonia Marathon is a much-loved race, having been voted best marathon in the UK by Runners World Magazine in 2007 and 2011. At the same time it is also widely regarded as one of the most difficult marathons.

Snowdonia Marathon Route
The race takes place in some of north Wales's most spectacular scenery while encircling Snowdon. Runners are advised to consider the cold they may experience during the race and carry body cover with them.

The race, starting just outside of the village of Llanberis, is challenging from the very start. Runners turn onto the hilly A4086 after a traffic-free 3 mile stretch on the the ancient Nant Gwynant road, towards Pen-y-Gwryd.

Runners then have a spell of respite. The routes takes them along the A498 to Beddgelert (200ft) from where they continue along the A4085 to Waunfawr. It is then a rapid climb up to Bwlch y Groesa at about 1,200ft before heading downhill to the finish line in Llanberis.

Snowdonia Marathon Entry
* Unaffiliated Runners : £42
* UK Athletics Affiliated Runners : £40
* Registration Deadline : A ballot will run from 9:00 a.m. on December 1st 2022 until midnight on December 8th 2022. Results will be revealed on January 1st.
* Charities : The race supports Tenovus Cancer Care.

Contact Information
Address : Tyddyn Cae, Pontrug, Caernarfon, Gwynedd, LL55 2SW, Wales / Cymru
Tel. : +44 (0)7786 223763
Email :
Website :