Portumna Forest Marathon 2026

Portumna Forest Marathon 2026 is a multi-distance running festival held at Portumna Forest Park in County Galway, Ireland, offering 10K, Half Marathon, Marathon and a 50K ultra on Saturday 6 June 2026. The event is set within Coillte woodland and is promoted as a nature-forward running experience that combines a festival atmosphere with scenic forest running. The programme accommodates a range of abilities with multiple distances on the same day and a focus on compact, even surfaces suitable for road and trail runners.

The course is based around a largely flat 5K loop within Portumna Forest Park, with additional distance incorporated for the half and full marathon and extended routing for the 50K ultra. Surfaces are a mixture of tarmac roads and solid, compacted forest paths, emphasising an accessible, low-technical route through the trees. Participants are advised to consult the event website and official race information for final start locations, exact start times and course maps before race day.