
Glendalough, Ireland · Saturday 18 May 2024
The Wicklow Mountains have long drawn runners seeking something beyond the standard road marathon experience. This corner of Ireland offers genuine mountain scenery without the extremes that make alpine marathons inaccessible to most participants. The region sits at the heart of Wicklow Mountains National Park, where the landscape shifts between open moorland and forested valleys, creating a sense of genuine remoteness despite being within reasonable reach of Dublin. What makes Glendalough particularly appealing is that the area has built its identity around running tourism, with local partners recognizing that trail running and mountain marathons can anchor visitor interest in a way that few other sports can. The Lap of the Gap Marathon itself reflects this philosophy. Rather than following the typical out-and-back or circuit format, it's organized as a road race that captures the character and challenge of trail running. The course climbs steadily through the Wicklow Mountains, rising from around 129 meters to nearly 500 meters above sea level across the 42.2 kilometers, with 810 meters of total elevation gain that builds steadily throughout the race. This isn't a flat point-to-point route, and runners should expect to work on climbs from start to finish. The hilly terrain means the race rewards patience and proper pacing rather than early speed. Held in May, the Lap of the Gap attracts runners who value experience and memory over personal bests. The race organizers explicitly market it to those seeking a challenge and a journey rather than a fast time, which shapes the atmosphere on race day. It's organized by Glendalough Athletics Club and runs in support of the local running community, creating a smaller, more intimate marathon experience than typical commercial events. For runners willing to respect the elevation and embrace the mountain environment, this race delivers the kind of genuine engagement with a landscape that explains why people travel considerable distances to run in Ireland.
Adjusted Time
5:03:39
Time difference: +63.7 minutes compared to a flat, road, temperate course.
Glendalough Lap of the Gap Marathon is a full marathon held in Glendalough, Ireland, scheduled for Saturday 18 May 2024. The course is run on trail surface with 810m of total elevation gain, reaching a maximum altitude of 498m above sea level. For registration and full race details, visit the official Glendalough Lap of the Gap Marathon website.
This is a very challenging course with 810m of total elevation gain — significantly more than the average trail marathon. The route ranges from 129m to 498m above sea level (369m range). Hill training is essential, and runners should expect a significantly slower time compared to a flat course.
Glendalough Lap of the Gap Marathon is a trail race, meaning the course includes unpaved surfaces such as dirt, gravel, or forest paths. Trail surfaces are inherently slower than road courses due to uneven footing, technical sections, and often steeper gradients. Trail-specific shoes with good grip are recommended, and runners should expect a finish time 10-20% slower than their equivalent road marathon time.
Our difficulty rating for Glendalough Lap of the Gap Marathon is calculated using a model that combines elevation gain, temperature impact, and surface type. Use the difficulty calculator above to enter your target finish time and see exactly how many minutes this course would add or subtract compared to a perfectly flat, cool, road-based marathon. Faster runners and slower runners are affected differently by the same course conditions, so the difficulty is personalised to your pace.
Looking for an easier marathon or a tougher challenge? You can also compare Glendalough Lap of the Gap Marathon against other marathons to find the right race for your goals.
Dingle, Ireland
Maam Cross, Ireland
Limerick, Ireland
Ballyvaughan, Ireland
Longford, Ireland
Dingle, Ireland