Delphi Half Marathon
Leenane, Mayo
16 May 2026
⚠ Start times change frequently. Always check with race organiser or their website for this year's confirmed start time before travelling.
Course map
Adapted from the official site’s map
Elevation profile
About this race
The Delphi Half Marathon is a breathtaking point-to-point race starting at Glenkeen Farm in Louisburgh, Co. Mayo, and finishing in the village of Leenane, Co. Galway. The route passes through the dramatic Doolough Valley before running alongside Killary Fjord — Ireland's only true fjord — with mountains rising steeply on one side and the Atlantic waters of the fjord on the other. The course is predominantly downhill with a few gentle rises, making it fast and accessible for all levels. Runners pass lakes, rivers, waterfalls, and wild mountain scenery throughout. A bus shuttle operates from Leenane to the race start on the morning of the event. Race headquarters is in Leenane village. The course is officially measured and chip-timed.
Course profile & record eligibility
World Athletics record-eligibility rules cap net elevation loss at 1m per km of race distance, and require the start and finish to be no more than 50% of the race distance apart — both meant to stop a course gaining an unfair edge from downhill grade or a point-to-point tailwind. This is based on this course's recorded elevation and GPS data, not an official measurement or certification.