Marathons in Wales, United Kingdom 2026

2 marathons and running events

Cities

Cardiff 1 Llanberis 1
🏃 Cardiff
Registration Open Oct 4, 2026
United Kingdom

Cardiff Half Marathon

Cardiff, Wales Half Marathon
Certified 25,000 runners
£35.00 entry View Details →
🏃 Llanberis
Registration Open Oct 24, 2026
United Kingdom

Marathon Eryri

Llanberis, Wales Full Marathon
Certified 2,300 runners
£48.00 entry View Details →