Snowdonia National Park hosts marathon on 24 October

Snowdonia National Park hosts the Snowdonia Marathon in Llanberis on 24 October 2026, with the course circling Snowdon before returning to the village. The race is held in the park landscape and uses Llanberis as both its starting area and finish.

Snowdonia Marathon closes roads around the national park

The event starts just outside Llanberis on the A4086 and finishes in the village, according to the organiser's race-day information. The route then climbs the Llanberis Pass before continuing towards Beddgelert and Waunfawr.

The organiser lists several changes for 24 October 2026. Llanberis Pass will have a rolling closure from 9.30am until about 11.30am, while part of Llanberis High Street will be closed from 7am until 6pm.

Further restrictions are planned in Waunfawr and Beddgelert. The A498 through Beddgelert will close from 11.15am to 2pm, and clearways will apply in parts of Beddgelert and Llanberis from the evening of 23 October until 6pm on 24 October.

The 1982 race traces Snowdonia National Park and Llanberis

The Snowdonia Marathon began in 1982 and was designed as a mountain alternative to city and town races. Its course encircles Snowdon, described by the organiser as the highest peak in Wales and England.

The route links the park landscape to its communities rather than remaining on one mountain path. It leaves Llanberis for the pass, continues towards Beddgelert, crosses the roads around Waunfawr and returns to the same village for the finish.

That relationship gives the 24 October 2026 race a practical effect beyond the runners. The course follows public roads and village streets, so travel through Llanberis, Beddgelert and parts of the surrounding valleys will be shaped by the race schedule.

The official park website describes Snowdonia National Park as Wales' largest national park, with mountain landscapes, valleys, woodland and coastal areas. Snowdon is the best-known summit in the park, while Llanberis provides a principal access point for the event and its surrounding routes.

Visiting Snowdonia National Park: what travellers from Western Europe should know

• The Snowdonia Marathon takes place on 24 October 2026. Its start is just outside Llanberis on the A4086, and the finish is in Llanberis.
• Road access will change during the race. Closures affect Llanberis Pass, Llanberis High Street, Beddgelert and roads around Waunfawr, with the organiser advising spectators to consider the course geography carefully.
• The event centre is at the former Electric Mountain Visitor Centre in Llanberis. The organiser identifies Bangor as the nearest railway station and describes bus links between Bangor, Caernarfon and Llanberis.
• The route includes the climb through Llanberis Pass and a section of farm track before returning towards Llanberis. The terrain therefore combines public road, mountain road and uneven track conditions.

The event places Llanberis at the centre of a race that crosses several parts of Snowdonia National Park. The regional tourism listing for the marathon confirms the 24 October 2026 date and the route through the surrounding villages.

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Frequently asked questions about Snowdonia National Park

When does the Snowdonia Marathon take place at Snowdonia National Park?

The Snowdonia Marathon takes place on 24 October 2026, starting just outside Llanberis and finishing in the village.

What is Snowdonia National Park?

It is Wales' largest national park, containing mountain landscapes, valleys, woodland and coastal areas around Snowdon.

Where is Snowdonia National Park and how do you get there?

Llanberis is one of the event's main access points. The organiser identifies Bangor as the nearest railway station and lists bus links from Bangor and Caernarfon to Llanberis.