Aberdyfi Half Marathon

Aberdyfi, United Kingdom • 4 Apr 2026

Event overview

The Dyfi Half takes place in Aberdyfi on Sat 04 Apr 2026. The event offers a half marathon and a marathon (run as two laps of the half). The half is an Index Race in the UTMB 20K category. The first 20 places are offered at an early bird price. Results for recent editions are published on the UTMB website. Recorded course times include a half marathon of 01:47:41 (2024), a half marathon time of 02:14:59 (2025), and a marathon time of 03:51:04 (2024).

Course and logistics

The half marathon route has 850 m of total height gain and reaches a highest point of 320 m above sea level. The route passes through parts of the Dyfi Biosphere and the Wales Coast Path. Aid stations are located at 3.5 km, 12 km and 17.5 km and provide water, jelly babies, bananas and first aid. Depending on the forecast, organisers may require a waterproof jacket, hat and gloves, and a spare insulation layer. Parking is available in the main pay and display car park in the village and a smaller car park next to the Neuadd Dyfi. Aberdyfi train station is a short walk from registration. Visit the organization's website for the most recent information.

  • Half marathon - 850 m height gain
  • Marathon - two laps of the half marathon

Race information

UTMB 20K
20 km
850 m+
Half Marathon (20 Km)
Visit the organization's website for the most recent information.
Trail runs nearby

Take on upland trails in the Elan and Claerwen Valleys with an annual 12 and 20 mile walking and running challenge. Parts of the route are waymarked and map reading skills are needed; route maps and GPX files are sent to entrants in advance..

Enjoy scenic trails at Nant Yr Arian on 14 March 2026 with half marathon, 10 km and junior races. Waymarked routes, marshals and a village with food and coffee make this charity trail a great day out.

Take on the Beast of the Blacks in the stunning Black Mountains of Wales with 11, 20 or 40 mile trail options, fully marked and well supported. Canicross friendly and rich with aid stations and great views for all abilities.

Take on a scenic 8.6 mile loop around Trawsfynydd Lake in Snowdonia, a mixed tarmac and trail course with one testing hill and 175 m of ascent. All entry funds support the volunteer South Snowdonia Search and Rescue Team.

Take on Cadair X, a scenic mountain half marathon of 13.1 miles that climbs to the summit of Cadair Idris. Expect rugged trails, woodland and glacial lakes for a dramatic and rewarding mountain run.

Experience a 30 mile ultra across wild central Wales, starting and finishing in Llanidloes and taking in Clywedog Reservoir and the source of the River Severn. Staffed checkpoints and no overall time limit make it a welcoming adventure.