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Race Calendar

Ultra marathons in Wales, UK

23 upcoming ultra marathons in Wales, UK, sorted by date.

23 races

December 2026

2 races
SUN
6
Sea 2 Summit - Offa's Dyke Half/Full/Ultra
ULTRA
Prestatyn, Wales, GB
56 km42 km21 km
SAT
12
Celtic Ultra 2026
ULTRA
Aberdare, South Wales, GB
55 km

January 2027

1 race
SAT
16
Winter Run to the Castle Ultra 2027
ULTRA
Aberdyfi, North Wales, GB
68 km

February 2027

1 race
SUN
14
Brecon to Cardiff Ultra 2027
ULTRA
Brecon, South Wales, GB
76 km69 km

March 2027

2 races
SAT
6
Beast of the Blacks 2027
ULTRA
Crickhowell, South Wales, GB
64 km
SAT
13
Castle2Castle #Ultra
ULTRA
Welshpool, Wales, GB
52 km

April 2027

4 races
FRI
2
Rasus y Bannau 2027
ULTRA
Brecon, South Wales, GB
100 km64 km43 km
SAT
17
The Marreg
ULTRA
Crymych, Wales, GB
81 km
SAT
17
Beast of the Beacons
ULTRA
Talybont-on-Usk, Wales, GB
64 km32 km16 km
SAT
24
Mon & Brec Canal 40 Mile Race
ULTRA
Newport, Wales, GB
64 km

May 2027

2 races
SAT
8
Preseli Beast
ULTRA
Maenclochog, Wales, GB
52 km
FRI
14
Ultra-Trail Snowdonia Eryri by UTMB 2027
ULTRA
Llanberis, Gwynedd, GB
163 km106 km78 km56 km22 km

June 2027

2 races
FRI
11
Pomona 100
ULTRA
Chepstow, Wales, GB
161 km100 km
SAT
19
GB Ultras - Ultra Wales 50
ULTRA
Ganllwyd, Wales, GB
82 km

July 2027

6 races
SAT
3
Pegasus - The PIGUM
ULTRA
Abergavenny, Wales, GB
48 km22 km
SAT
3
Black Sheep Coastal Rush
ULTRA
Pwllheli, Wales, GB
50 km25 km
SAT
24
Beacons Way Ultra 100 Mile
ULTRA
Abergavenny, Wales, GB
161 km
SAT
24
Welsh 3000 Challenge (14 Peaks)
ULTRA
Capel Curig, Wales, GB
50 km
SAT
24
Beacons Way Ultra 100km
ULTRA
Llangynidr, Wales, GB
100 km
SAT
24
Ultra X Wales
ULTRA
Bannau Brycheiniog National Park (Brecon Beacons), Wales, GB
161 km110 km60 km50 km25 km12 km

August 2027

1 race
SAT
7
Brecon Beacons 51k
ULTRA
Talybont-on-Usk, Wales, GB
51 km24 km

September 2027

2 races
MON
6
Dragon's Back Race 2027
ULTRA
Conwy, Conwy, GB
380 km
MON
20
Welsh 3 Peaks Race
ULTRA
Llanberis, Wales, GB
295 km117 km101 km77 km68 km60 km54 km53 km
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