June 2026
Porthcawl, Bridgend
40mi Ultra
Ultra Marathons in Wales 2026
24 upcoming ultra marathons in Wales. Browse dates, entry fees and links to enter.
Upcoming ultra marathons in Wales
24 events
June 2026
Llangollen, Denbighshire
50K Ultra Trail
Free-£57View event
05-07 Jun 2026
Haverfordwest, Pembrokeshire
50K, 100 mile, Ultra, Trail
£45-£160View event
July 2026
Llanidloes, Powys
27mi Ultra
July 2026
Newtown, Powys
45mi Ultra
03-05 Jul 2026
Mynydd Mawr, Gwynedd
50K, 75 Mile, Ultra Trail
08-12 Jul 2026
Llanidloes, Powys
218mi - 440mi, Multi-stage Ultra
11-12 Jul 2026
Caernarfon, Gwynedd
10K, Half Marathon, Marathon, Ultra
£31.99-£319.99View event
18-19 Jul 2026
Rhossili, Swansea
Ultra Trail
18-19 Jul 2026
Swansea, West Glamorgan
25K, 50K, 100K, Marathon, Ultra
£49-£199View event
25-26 Jul 2026
Brecon, Powys
12k, 25k, 50k, 60k, 110k, Ultra
FREE-£290View event
August 2026
Aberdovey, Gwynedd
Marathon, Ultra
£44-£70View event
August 2026
Cardiff, South Glamorgan
Ultra Marathon
£80-£90View event
August 2026
Caernarfon, Gwynedd
50K ultra run, Trail run
£39-£139View event
September 2026
Barmouth, Gwynedd
12K, 25k, 53k, 54k Trail/Ultra
£57-£97View event
September 2026
Crickhowell, Powys
Backyard Ultra
04-06 Sep 2026
Holyhead, Isle of Anglesey
Ultra run
£125-£600View event
October 2026
Welshpool, Powys
32 Mile Ultra
30 Oct-01 Nov 2026
Hay-on-Wye, Powys
Mountain/Trail Ultra
November 2026
Brecon, Powys
Half marathon, Marathon, Ultra
£20-£80View event
November 2026
Llithfaen, Gwynedd
Ultra
November 2026
Merthyr Tydfil, Merthyr Tydfil
Ultra
November 2026
Bangor, Gwynedd
Ultra
December 2026
Prestatyn, Clwyd
Half Marathon, Marathon, 56km, Ultra
£38.50-£59.50View event
Other distances in Wales
Browse races by distance across Wales.
Ultra Marathons in other UK regions
Find ultra marathons elsewhere in the UK.