On Snowdonia Trail Marathon

Llanberis, Gwynedd

Organiser's Description

Welcome to the On Snowdonia Trail Marathon 2019, a stunning trail Marathon, Utra Marathon, Half Marathon and 10k, starting and finishing in Wales's outdoor capital, Llanberis.

This Trail Marathon is a challenge in every sense of the word. Ascending 1,685 metres over 26 miles of iconic and spectacular trails, this epic race will circumnavigate and eventually climb Wales' highest peak - Snowdon. The incredible route explores the trails, gorgeous panoramic views and tough climbs that make Snowdonia National Park such a mecca for outdoor enthusiasts. Visiting Rhyd Ddu, Beddgelert, Nant Gwynant, Pen y Pass and Snowdon, there surely can't be a more striking trail marathon route in the UK!

Start Time



Event village facilities, including toilets

Full route marking

Water stations around the course

Electronic chip timing

Family entertainment

Music and live commentary at the event village

Web results service

Event photography

Emergency support

Event massage

A medal for all finishers

Free goody bag at registration

Llanberis, Gwynedd LL55 4UR

Llanberis, North Wales has superb transport links and is incredible easy to find. Use the postcode LL55 4UR to locate the event village.

By Road

Easily accessible from many of the main motorways, the race is located just off junction 11 on the A55 express way and can be reached within a couple of hours if you're travelling from the North West.

There is ample parking in Llanberis; charges may apply.

Start Times:

Ultra Marathon - 0630

Marathon - 0900

Half Marathon - 0945

10k - 10.15

Registration and Expo

In the event village Saturday afternoon and Sunday morning.

Prize Giving

13:00 (approximate time subject to change on the day) Half Marathon and 10k at the race finish area.

15:00 (approximate time subject to change on the day)
Prize giving at the race finish area for the Marathon and Ultra Marathon

Cut Off Times

TBC FOR 2019

There is a compulsory cut off at 1415 at Pen Y Pass to safeguard the well being of both athletes and our marshals. Athletes arriving after this time will be offered the choice of returning by foot to the event village or waiting for a shuttle vehicle. Buses to Llanberis are £1.50 should you wish to use them.

Ultra Marathon - This is Mile 28.6 ( 46.00 Km). You will need to average 16.15 min/mile or 10.06 min/Km

Marathon - This is Mile 18.8 ( 30.25 Km). You will need to average 16.45 min/mile or 10.25 min/Km

The Finish Line will close at 1830. This allows the below times for completion.

Ultra Marathon - 12 Hrs

Marathon - 9 Hrs 30 Mins

For Marshal Welfare, Half and 10K runners will need to finish within the following times.

Half Marathon - 6 Hrs 30 Mins

10k - 2 Hrs 30 Mins

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