There are 5 upcoming ultra races in Merthyr Tydfil listed. Next up: OTT Ultra 2026 (Saturday, 7 November 2026), Phoenix South Wales - Christmas Advent Run (Sunday, 29 November 2026), OTT Winter Ultras (Saturday, 30 January 2027).
Upcoming races only, soonest first. Confirm dates and entry details with the organiser.
Merthyr Tydfil · George Town Boys and Girls Club, Merthyr Tydfil
Trail Race organised by OTT Events Limited in Merthyr Tydfil. Minimum age: 18 or older. Online entry deadline: Sunday 1st November 2026. Published meeting-location reference: ///spits.movies.spoken.
£60–£62
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Merthyr Tydfil · CF48 1UT, Merthyr Tydfil, United Kingdom
Phoenix South Wales - Christmas Advent Run is organised by Phoenix Running South Wales in Merthyr Tydfil. Entry options: 7 Hour Timed Event Including 5km, 10km, Half Marathon, Marathon, Ultra.
£35
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Merthyr Tydfil · Penderyn Square Merthyr Tydfil, United Kingdom
A 75-mile or 100-mile winter ultramarathon starting in Merthyr Tydfil on 30 January 2027, with a 40-hour cut-off ending on 31 January. Intended for experienced ultra runners.
£185–£250
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Merthyr Tydfil · Georgetown Boys & Girls Club Dynevor Street, Georgetown, Merthyr Tydfil, United Kingdom
OTT Ultra-R takes place in Merthyr Tydfil on 19 June 2027. Check the organiser’s page for the route, start arrangements and eligibility.
£65
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Merthyr Tydfil · Merthyr Tydfil, Wales, United Kingdom
MTC Y Draig Goch is organised by Ultra Running Ltd in Merthyr Tydfil. Entry options: MTC Y Draig Goch. The course surface has not been confirmed.
£90
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