Wye Valley Tunnel Run

Sedbury, United Kingdom • 19 Jul 2026

Event overview

The Wye Valley Tunnel Run is a set of running events on the Wye Valley Greenway, based at Wyedean School in Sedbury, Chepstow. The event uses the former railway line and the restored Tidenham Tunnel and offers multiple distances on largely out-and-back courses. The Tidenham Tunnel is over 1 km long and is included in the routes.

Distances offered

  • 500 m Colourburst (lap format for children)
  • 2 km Colourburst (lap format for children)
  • 10 km (Valley View one lap)
  • Half marathon (Valley View two laps or Tintern Station one lap)
  • Marathon (Tintern Station two laps)

Course and terrain

Most of the routes follow the old railway track and riverside paths, giving a predominantly flat, compact stone or tarmac surface. Some Tintern Station routes include a short 50 m rocky trail section and a few flights of steps. The Valley View 10 km route includes about 2 km in tunnel; its half marathon variant includes about 4 km in tunnel. The Tintern Station half and marathon include tunnel distances as stated in the distance descriptions.

Aid, markings and facilities

Courses are waymarked and marshalled. Feast stations provide water, electrolyte drinks and a mix of food including gluten free, dairy free and vegan options; there is at least one feast station on the 10 km, three on the half marathon and seven on the marathon. There are on site toilets, a mobile coffee van and a bag drop; there are no changing rooms. Onsite parking is charged at £2 per car and the nearest train station is Chepstow, about 1 mile away.

Entries, medals and cut offs

Age minimums apply: no minimum for the Colourburst, 15 for the 10 km, 17 for the half marathon and 18 for the marathon. All runners of 5 km and longer receive a 10 cm x 10 cm two-sided event medal. Marathon runners must start lap 2 within a 3 hour cut off. Visit the organization's website for the most recent information.

Race information

Marathon
Tintern Station Marathon
Half Marathon
Tintern Station Half Marathon
Half Marathon
Valley View Half Marathon
10 km
Valley View 10km
Colourburst 2km
Colourburst 500m
Visit the organization's website for the most recent information.
Trail runs nearby

Join the 3 French Hens Run on 9 December at Pengethley Manor in Ross on Wye, part of the 12 Days of Christmas series. Pick distances from 5k to ultra and tackle a scenic off road loop through vineyards and rolling hills, walkers welcome.

Join the 4 Calling Birds Run on 10 December 2025 at Pengethley Manor near Ross on Wye for off road laps through vineyards and rolling hills. Distances from 5k to ultra welcome walkers and runners aged 18 and over.

Join the festive 5 Golden Rings Run at Pengethley Manor on 11 December as part of a 12 Days of Christmas series. Choose from 5k to ultra and tackle offroad laps with a hill through vineyards, walkers and runners welcome.

Run the 6 Geese a laying event on 12 December at Pengethley Manor, an off road lap course through vineyards with a cheeky hill. Distances from 5k to ultra welcome walkers and runners and every finisher gets a unique series medal.