Trails & Tarmac Winter Back Yard Ultra
Distance: Unlimited
Elevation: 86M
Location: Crickhowell, Wales
Date: Sat, 6th Feb 2027
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Steep climbs. Technical descents. Untamed beauty. Explore our comprehensive directory of ultramarathons In Wales.
Wales may be smaller than its northern neighbours, but it packs an incredible punch for ultra runners. Known as a "Mecca" for trail and mountain running, Wales offers some of the most technical and breathtaking terrain in the British Isles. Whether you are looking for the jagged ridgelines of the north or the sweeping golden sands of the south, Wales provides a legendary backdrop for every endurance athlete.
Use the filters below to search through the most popular upcoming ultramarathons in Wales all in one place.
39 events found
Map ViewBack Yard Ultra
Distance: Unlimited
Elevation: 86M
Location: Crickhowell, Wales
Date: Sat, 6th Feb 2027
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50 Miles
Distance: 43 Miles
Elevation: 1,200M
Location: Brecon, Wales
Date: Sun, 14th Feb 2027
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50 Miles
Distance: 47.5 Miles
Elevation: 2,680M
Location: Brecon, Wales
Date: Sun, 14th Feb 2027
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50 Miles
Distance: 40 Miles
Elevation: 3,385M
Location: Longtown, Hereford
Date: Sat, 6th Mar 2027
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50 KM
Distance: 50KM
Elevation: 1,020M
Location: Welshpool, Wales
Date: Sun, 14th Mar 2027
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Multi Day
Distance: 200 Miles
Elevation: 9,144M
Location: Chepstow, Wales
Date: Wed, 14th Apr 2027
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50 Miles
Distance: 40 Miles
Elevation: 2,571M
Location: Gilestone Farm, Brecon
Date: Sat, 17th Apr 2027
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100 KM
Distance: 100KM
Elevation: 2,438M
Location: Prestatyn, Wales
Date: Sat, 24th Apr 2027
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50 KM
Distance: 53.8KM
Elevation: 823M
Location: Prestatyn, Wales
Date: Sat, 24th Apr 2027
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Back Yard Ultra
Distance: Unlimited
Elevation: 52M
Location: South Wales
Date: Sat, 24th Apr 2027
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50 KM
Distance: 52KM
Elevation: 388M
Location: Ogmore-by-Sea, Wales
Date: Sat, 24th Apr 2027
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100 Miles
Distance: 101 Miles
Elevation: 5,181M
Location: Abergavenny, Wales
Date: Sat, 8th May 2027
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100 KM
Distance: 101KM
Elevation: 3,100M
Location: Talgarth, Wales
Date: Sat, 8th May 2027
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50 KM
Distance: 49KM
Elevation: 1,657M
Location: Llangollen, Wales
Date: Sat, 5th Jun 2027
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50 Miles
Distance: 51 Miles
Elevation: 2,898M
Location: Coed-Y-Brenin
Date: Sat, 19th Jun 2027
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Running in Wales is about more than just the mileage; it is about the heritage and the challenge of the landscape.
Home to three National Parks, Eryri (Snowdonia), the Bannau Brycheiniog (Brecon Beacons), and the Pembrokeshire Coast, Wales offers a variety of terrain from alpine-style peaks to coastal cliffs.
Despite the remote feel of many trails, most Welsh race hubs are easily accessible from major UK cities, making it the perfect location for a weekend race.
For those new to the distance, the Dragon Coastal 30 or 50 is highly recommended. Unlike the technical mountain races in the north, these coastal ultras feature flatter, non-technical trails and breathtaking scenery along the Wales Coast Path, making them a perfect entry point into the world of Welsh ultramarathons.
The Dragon Back Race is widely considered the toughest mountain race in the world, let alone Wales. It covers approximately 380km over six days, following the mountainous spine of Wales from Conwy Castle to Cardiff, with a staggering 17,400m of total ascent, nearly twice the height of Mount Everest.
The peak season for Wales ultra marathons is between April and September. While summer offers longer daylight hours for events like Ultra-Trail Snowdonia (UTS), autumn and spring provide cooler temperatures ideal for endurance running. However, Welsh weather is famously unpredictable, so carrying compulsory kit is essential year-round.
Yes, Wales hosts several iconic 100 mile races. Key events include the Dragon 100, which traverses the stunning Gower and Glamorgan heritage coasts, and the Epona 100, a brutal but beautiful loop through the Bannau Brycheiniog (Brecon Beacons). These races are world-class qualifiers for major international events.
Most ultras in Wales allow a mix of running and walking, especially on steep technical climbs where power hiking is a common strategy. However, always check the specific race cut-off times. Most organisers, such as those for the Beacons Ultra, welcome hikers as long as they can maintain the minimum required pace to reach checkpoints safely.
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