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.

2023 Course Map (pdf)2023 Course Profile (pdf)

2024 Ballot Entry Proceedure

When does the ballot open and close?

The ballot opens  at midday on Friday December 1st 2023 and will close at midnight on Friday December 8th2023

Where will I find the link?

The link to enter the ballot will be posted on our website and on our social media pages

What information will I need?

You will be asked your name, date of birth, email address, postal address, phone number and where applicable, number of previous Marathon Eryri events completed and your marathon PB

How many places will each person be able to apply for?

There will be strictly one place for each applicant.

When will the results be announced?

The results will be announced on January 1st 2024

How will I know if I am in?

Successful applicants will be sent an email with a link that they can use to enter and pay. This link will be valid until 31st January, 2024. Failure to enter in that 4-week period will mean a loss of the place.

What happens to places that aren’t used?

Places that have not been claimed will be put back for a second ballot draw which will take place on February 2nd 2024

If entrants find that they can no longer use their places, will transfers still be allowed?

Yes, entrants will be able to pass places on themselves as in previous years.

Is there a good for age qualification?

No, we have decided not to include this. The ballot will take a distribution across the age categories.

Will I be charged to enter the ballot?

No, payment will be taken only when you are offered a place

Transferring Options

We know that sometimes plans change or unforeseen circumstances come up. If for any reason you are no longer able to attend this event, you can transfer your ticket to someone else and subsequently receive a refund.

There are two options when transferring a ticket. If you have someone that you wish to transfer the ticket to, you can action this yourself by logging into your EtchRock account. The below article will guide you through this process :-

Alternatively, if you don’t have someone that you wish to transfer the ticket to, EtchRock is managing a waiting list. All of the unsuccessful applicants from the ballot have been added to this waiting list, so those that originally entered the ballot do not need to request to be added to this waiting list. To offer your place to someone on that list please contact

Transfers are available until September 30th, 2024.

Raceday Information

Registration will take place at the car park area opposite the Snowdon Mountain Railway station, Llanberis LL55 4TU at our Marathon Eryri event centre from midday until 10.30pm on Friday 25th October 2023 and again from 7.00am until 10am 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