Clare Burren Marathon Challenge

Clare Burren Marathon Challenge 2025 Course Analysis

Clare Burren Marathon Challenge is a full marathon held in Ballyvaughan, Ireland, scheduled for Saturday 24 May 2025. The course is run on road surface with 670m of total elevation gain, reaching a maximum altitude of 291m above sea level. For registration and full race details, visit the official Clare Burren Marathon Challenge website.

Elevation Profile

This is a very challenging course with 670m of total elevation gain — significantly more than the average road marathon. The route ranges from 0m to 291m above sea level (291m range). Hill training is essential, and runners should expect a significantly slower time compared to a flat course.

Expected Race Day Weather

Based on historical weather data for May, the expected race day conditions are as follows. Near-ideal running temperatures are expected, ranging from 13°C to 15°C. This temperature range is widely considered optimal for marathon performance, allowing efficient heat dissipation without cold-related issues. There is a high chance of rain (100%). Runners should prepare for wet conditions, including appropriate footwear and clothing choices.

Surface Type: Road

Clare Burren Marathon Challenge is run on road surfaces, which provide the fastest and most predictable conditions for marathon running. Road courses allow for consistent pacing and are typically the best choice for runners targeting a personal best time.

How Difficult Is Clare Burren Marathon Challenge?

Our difficulty rating for Clare Burren Marathon Challenge 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 Clare Burren Marathon Challenge against other marathons to find the right race for your goals.