Phoenix Running - Trelewis

Trelewis, United Kingdom • 11 Jul 2026

Phoenix Running South Wales Butterfly Run

The event is organised by Phoenix Running South Wales at the Rock UK Summit Centre near Trelewis, Merthyr Tydfil, and uses a 5.3 km, 3.28 mile out and back lap through Parc Taf Bargoed. The course is multi terrain, with the majority on tarmac paths and about 0.5 miles on a riverside trail. Each lap has approximately 37 m elevation gain and loss.

This is a timed event where participants choose how many laps to complete within a seven hour time limit. The minimum distance is one lap, 3.28 miles. The event offers a range of distance options:

  • 5 km
  • 10 km
  • Half marathon
  • Marathon
  • Ultra distance options by completing additional laps

Organisers provide finishers medals to attended participants and offer a lower cost no medal entry option. The event uses flexible rock up and run start times to accommodate different arrival times. Entry categories include affiliated and unaffiliated fees. The event is licensed by Welsh Athletics, race licence 26MTWA00309. Places are limited and the event includes event support such as aid stations and same day results. Visit the organization's website for the most recent information.

Race information

Marathon
Marathon
Half Marathon
Half Marathon
10 km
10k
3 mi
Lap Distance
5 km
7 Hour Timed Run
Ultra
Visit the organization's website for the most recent information.
Trail runs nearby

A 26.2 mile trail marathon near Bridgend on 23 May 2026 with mixed terrain, quarry and forestry sections, five feed stations and a GPX route. Entry was limited to 60 participants aged 18 or over.

A 5 km fell race near Pengenffordd in South Wales with about 320 m of climb and a route that requires navigational skills. Junior races are available from age 7 and the event is insured by the WFRA.

A themed 7 hour Time Challenge at Dare Valley Country Park celebrating 50 years of Rocky, with distances from 3 km up to ultra, themed medals, goody bags and aid stations on well maintained park paths.

Phoenix Running South Wales stages the Manta Ray Run at Parc Taf Bargoed, Trelewis. Participants run repeated 5.3 km laps within a seven hour time limit and receive a bespoke finisher medal unless they choose a no medal option.

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