Mayo AC 5k Series Race 1 Castlebar
Castlebar, Mayo
12 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
Map based on 2025 route
⚠ This map is for indicative purposes only — routes can change, or be reversed, year to year. Check with the race organiser for this year's confirmed map.
Elevation profile
About this race
The first race in the 2026 Mayo AC 5k Series takes place on Tuesday evening at Lough Lannagh in Castlebar. The flat, measured course winds through the scenic Lough Lannagh area, a well-established route used by local runners throughout the year. The race is chip timed and held under an Athletics Ireland permit. This is the fourteenth edition of the popular series, which serves as Mayo AC's primary annual fundraiser and attracts runners of all abilities from across the west of Ireland. Participants register and collect bibs at the St. Gerald's College hall nearby before heading to the start line. The series is supported by main sponsors EBS, Intersport Elverys, and Shaw Commercials, with Mayo Mental Health Association as charity partner for 2026. Online registration is available in advance.
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.