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Half Marathon Calendar Wales 2026-2027

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Monthly updates for Wales

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Explore the best half marathons in Wales for 2026-2027! Our updated list features 61 exciting races across the region. Find your next race in Wales below and join the running community at these great events!

December 2026
Dec
19
Sa

Nightmare before Xmas Trail ½ Marathon

Trail Run 13 mi
Dec
20
Su

Saturn Running - Cwmdare

Trail Run 3 km 5 km ... Marathon 50 km
January 2027
Jan
24
Su

Chepstow Running Festival Half Marathon

5 km 10 km Half Marathon
February 2027
Feb
21
Su

Llanelli 10K & Half Marathon

10 km Half Marathon
Feb
28
Su

Saturn Running - Aberdare

Backyard Ultra 3 km 5 km ... Marathon 50 km
Feb
28
Su

Wrexham Half Marathon

Half Marathon
March 2027
Mar
6
Sa

St David's Day Run

5 km 10 km Half Marathon
Mar
21
Su

Swansea Half Marathon

5 mi Half Marathon
April 2027
Apr
4
Su

Llandudno Half Marathon

10 mi Half Marathon
Apr
4
Su

Merthyr Half Marathon

Half Marathon
Apr
11
Su

Pendine Sands Races

Trail Run 5 km 11 km Half Marathon
Apr
18
Su

Newport Wales Marathon

10 km Half Marathon 26 mi
Apr
18
Su

Newport Marathon Festival

10 km 13 mi 26 mi
May 2027
May
9
Su

Snowdonia Half Marathon

Half Marathon
May
9
Su

Excalibur Trail Races

Trail Run 10 km Half Marathon Marathon
May
23
Su

Anglesey Half Marathon

10 km 13 mi
May
23
Su

Margam Wild Trail Runs

Trail Run 5 km 10 km Half Marathon
May
29
Sa

Welsh Festival of Running

Trail Run 5 km 10 km ... 50 km 80 mi
June 2027
Jun
27
Su

Nova Coast Half Marathon

Half Marathon
August 2027
Aug
14
Sa

Chepstow Running Festival Half Marathon

5 km 10 km Half Marathon
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