Glendalough Lap of the Gap Marathon
The Lowdown
The Glendalough Lap of the Gap Marathon is Ireland's highest road marathon, run each May through the Wicklow Mountains National Park in County Wicklow. Organized by Glendalough Athletics Club since 2016, the race starts and finishes near the Brockagh Resource Centre in Laragh, beside the Glendalough monastic site, and climbs past Glenmacnass Waterfall, the Sally Gap and Lough Tay before looping back through the valley. A companion Glen to Glen Half Marathon covers roughly the second half of the course on the same morning. The marathon gains about 800 meters of elevation on narrow mountain roads closed to traffic, and organizers cap the field because of National Park road restrictions, so early entry is recommended. The 2027 edition, the event's 10th, is scheduled for Saturday, May 22, with the marathon starting at 7:30 AM and the half marathon at 8:00 AM. Entry is currently open at early-bird pricing, with fees rising closer to race day.
Race Day
Weather Forecast
Elevation
Terrain Profile
Moderate rolling hills
Participants
Field Size
Intimate field
Crowd Rating
Spectator Support
Moderate spectator support
Glendalough Monastic Site
Glenmacnass Waterfall
Sally Gap
Lough Tay
Wicklow Mountains National Park
Brockagh Resource Centre, Laragh
Other distances available during the event weekend:
Glendalough, County Wicklow, Ireland
IE
Average rate for 3-star accommodations near the start line
Eligibility
- Field size limited due to Wicklow Mountains National Park road-closure restrictions; early entry recommended before the event sells out
Entry Methods
- Online via race-space.com, Glendalough AC's official ticketing partner
Cancellation & Refund Policy
Refunds available up to 3 days after purchase per the official ticketing page
Ticket transfers and substitutions must be made by May 1, 2027
2027 is the event's 10th edition
Course is a loop through Wicklow Mountains National Park, starting and finishing near the Brockagh Resource Centre in Laragh
Organized by Glendalough Athletics Club in support of local sports clubs
Marathon starts 07:30, Glen to Glen Half Marathon starts 08:00
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