Portumna Forest Marathon 2026 | County Galway

The Portumna Forest Marathon 2026 is a forest running festival held at Portumna Forest Park in County Galway, offering distances for a wide range of abilities from 10K through to a 50K ultra. The event is branded as the Portumna Forest Marathon and is staged within a Coillte forest setting, emphasising scenic running through mature woodland and parkland. Races are run predominantly on a flat 5K loop inside Portumna Forest Park, with additional distance added where required to make up half and full marathon distances. The race listing highlights the festival atmosphere where runners, crew and marshals blend with the natural environment for a calm yet encouraging race day.

The course surface combines tarmac roads and compacted, even gravel forest paths, suitable for both road and trail running shoes. Different races use separate start locations within the park: the marathon, 50K and 10K start at the Forest Park main car park while the half marathon starts at the park entrance. Entrants are directed to the event website (forestmarathon.com) for maps and full logistics, and registration is offered via Njuko; the listing also notes chip-timed events in the race categories. Competitors should consult the official site and social pages for the most current start lines, course maps, entry details and race instructions.