There are 4 upcoming ultra races in Denbighshire listed. Next up: Sea 2 Summit - Offa's Dyke Half/Full/Ultra (Sunday, 6 December 2026), North Wales 50km & 100km (Saturday, 24 April 2027), 24 Hours South - The Offa's Dyke ULTRA (Saturday, 8 May 2027).
Upcoming races only, soonest first. Confirm dates and entry details with the organiser.
Prestatyn · Prestatyn Nova Centre
Sea 2 Summit - Offa's Dyke Half/Full/Ultra takes place in Prestatyn on 06 December 2026. Organised by Out Fit. Published venue: Prestatyn Nova Centre. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£38.50–£59.50
See entry options & fees
Prestatyn · Prestatyn Nova Centre
North Wales 50km & 100km takes place in Prestatyn on 24 April 2027. Organised by Out Fit. Published venue: Prestatyn Nova Centre. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£57.50–£99.50
See entry options & fees
Prestatyn · Nova Centre, Prestatyn
A 24-hour challenge heading south on Offa’s Dyke Path from Prestatyn. Solo runners and teams travel as far as they can before the fixed finish at noon on 9 May. A separate earlier walking start is offered; check transport and checkpoint arrangements.
£99.50
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Llangollen · Llangollen Leisure Centre, Dinbren Road, Llangollen. LL208TG
The Llangollen 50k takes place in Llangollen on 05 June 2027. Organised by Out Fit. Published venue: Llangollen Leisure Centre, Dinbren Road, Llangollen. LL208TG. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£56.50
See entry options & fees
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