Logo

Nant yr Arian Silver Trail

Ystumtuen, United Kingdom • 14 Mar 2026

Nant Yr Arian Silver Trail Races

The event is scheduled for 14 March 2026 in the Cambrian Mountains. It is organised by Aberystwyth Athletic Club as a not-for-profit event that supports local charities. This will be the ninth edition. Entries open 22 March 2025 and close 4 March 2026.

Routes are fully signed and waymarked; GPX files are available as backup. There is no race cut-off time. The organisers require a basic level of mandatory kit because the races take place in mountain terrain; details are provided on the event Facebook page. Transfers are allowed only while entries are open and race deferrals are not possible.

Distances and practical details

  • Half Marathon
  • 10 km
  • Under 7s: 0.5 mile (must be accompanied by an adult)
  • Ages 7-11: 1.5 miles
  • Ages 12-16: 2.6 miles

The Half Marathon has two feed stations and the 10 km has one. The event village offers hot and cold food, speciality coffee and additional food options. Early-bird entry fees apply until 30 June 2025; thereafter the listed standard fees apply. Junior entry fee is £5. Transfers and entry conditions follow the organiser’s published terms. Visit the organization's website for the most recent information.

United Kingdom Wales Ystumtuen

Race information

Registration
21 km
Half Marathon
10 km
10k
3 mi
Junior Ages 12-16 2.6 Miles
Junior Ages 7-11 1.5 Miles
Junior Under 7's 0.5 Mile
Visit the organization's website for the most recent information.
Trail runs nearby

Reservoir Roundabout

Elan Valley - 13 mi from Ystumtuen

Scenic non competitive walking and running across the upland Elan and Claerwen Valleys. Choose 12 or 20 miles, follow partly waymarked routes using map skills, enjoy refreshments and a finisher certificate, and support local charities.

Aberdyfi Half Marathon

Aberdyfi - 13 mi from Ystumtuen

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 a..

UTMB Index

MTC Gelert

Powys - 28 mi from Ystumtuen

Take on MTC Gelert, a scenic one day 47 mile ultra from Barmouth to Llanidloes along National Cycle Route 8. With just 40 places, strict cutoffs and a bespoke finisher medal, this tough Welsh challenge is not to be missed.

Cadair X

Tywyn - 16 mi from Ystumtuen

The Cadair X will take place in Tywyn on Saturday 25 April 2026. You can run 13 miles.

Pegasus - The HOWUM

Llanidloes - 14 mi from Ystumtuen

The HOWUM 2026 is a 30-mile ultra in mid-Wales, starting and finishing in Llanidloes. The route forms the Heartlands of Wales circular, merging four trails—the Sarn, Glyndwr’s Way, Severn Way and Wye Valley Walk—toward the source of the Riv..

GB Ultras - Ultra Wales 50

Ganllwyd - 28 mi from Ystumtuen

Ultra Wales 50 is a 51 mile trail through Southern Snowdonia from Coed y Brenin Visitor Centre, taking in rugged peaks and coastal views. Expect big climbs, wild scenery and a 20 hour cut off for a true mountain challenge.