The inaugural Snowdonia Marathon was held in 1982, and was conceived as a dramatic alternative to the numerous city and town races becoming so popular. The demanding and spectacular route, encircling Snowdon, Wales’ and England’s highest peak, has given the event a unique place in the annual marathon calendar ever since.

Route and Profile

Race start time is 10.30am from just outside Llanberis. The route follows the A4086 and climbs to the top of the Llanberis Pass (Pen y Pass 1.100ft). Dropping down to the Pen Y Cwyryd junction, the race then follows the old road along to the campsite until it joins the A498. This 2km section is farm track, downhill, then the surface returns to the tarmac. There is a short, sharp uphill back up to the main road at the campsite. The route then continues to the Beddgelert (200ft) and then continues along the A4085 to Waunfawr. From here it is a rapid climb to about 1,200ft at Bwlch y Groes (a short length is unmetalled) and then downhill to the finish in Llanberis.

2019 Course Map (pdf)2019 Course Profile (pdf)

Transferring an Entry

If you find that you need to change any of your information between now and race day (if you move house, change running clubs etc.) you can easily log back in to your information and make these changes yourself. You can do this via the log in details on the email receipt when you originally entered the race.

If you want to transfer your place to another runner you can also do this yourself by logging in and giving the new runner’s name and email address. They will then be sent an email to complete the process.

Any changes need to be made before September 30th2019. After this time the database is shut down for numbering etc. Any changes made after this will not be allowed.

Raceday Information

Registration will take place alongside the Electric Mountain Visitor Centre (LL55 4UR) at our Marathon event centre from midday until midnight on Friday 25th October 2019 and again from 6am until 9am on the morning of Saturday 26th October. This is when you will be given your race pack.

Runners can park at any one of a number of Pay Display car parks around the village. All are within easy walking distance of registration. Please be environmentally aware and try to share transport to the race wherever possible.

Please be aware that the weather at this time of year can be quite challenging and you are advised to carry some sorts of body cover with you whilst running.


Our race HQ is in Electric mountain, Llanberis, the start is just outside the village on the A4086. The race finishes in Llanberis which is located 66 miles from Chester, 103 miles from Manchester and 270 miles from London.


Full travel information and trains available here