Wye Valley Tunnel Run

JUL
18
2027
Flat races along the Wye Valley Greenway and through the lit Tidenham Tunnel, with events from 500 m Colourburst to a full marathon.
Sun 18 Jul 2027
Marathon Half Marathon 10 kilometers

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Wye Valley Tunnel Run

The Wye Valley Tunnel Run is held on Sunday 18 July 2027, starting at Wyedean School in Sedbury, Chepstow. The event uses the Wye Valley Greenway and the refurbished Tidenham Tunnel, which is over 1 km long.

Race options

  • Colourburst: 500 m and 2 km fun laps on Wyedean School pitch, untimed.
  • 10 km (Valley View): 1 lap out and back, flat railway line, includes 2 km in tunnel.
  • Valley View Half: 2 laps out and back, predominantly flat, 4 km in tunnel.
  • Tintern Station Half: 1 lap, mostly flat, includes 2 km in tunnel, some rocky sections.
  • Marathon (Tintern Station): 2 laps, mostly flat, 4 km in tunnel, 3 hour cutoff to start lap two.

Routes and terrain are largely on former railway track with compact stone path and tarmac. Most courses are flat and clearly marked. The Tintern routes include a short 50 m rocky trail and a few flights of steps where the trail transitions.

Facilities and race services are provided on course and at the finish. There are feast stations offering water, electrolyte drinks and a variety of food including gluten free, dairy free and vegan options; the marathon has additional feed stations and flat cola on the second lap. All runners of 5 km and longer receive a 10 cm by 10 cm two sided event medal. On site toilets, a mobile coffee van and a bag drop are available. On site parking is payable to the school and the nearest train station is Chepstow, about 1 mile away. Buggy runners are permitted on the 10 km and the Valley View Half; canicross is not allowed. Wave starts of about 100 runners are used to space participants. Visit the organization's website for the most recent information.

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