Clare Burren Marathon Challenge
Ballyvaughan, Ireland · Monday 24 May 2027
The Clare Burren Marathon Challenge, held on May 24, 2025, in Ballyvaughan, Ireland, is a unique event that combines athleticism with natural beauty. The course takes runners through some of Europe's most unique landscapes, offering breathtaking views of the Burren's flora and fauna. With its mix of road, green road, and trail, this marathon is a must-do for adventurous runners seeking a challenging yet enjoyable race experience.
Difficulty Calculator
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:m
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Adjusted Time
4:26:39
Time difference: +26.7 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain670m
Elevation High291m
Elevation Low0m
Weather Forecast
High15°C
Low13°C
Chance of Rain100%
How hard is Clare Burren Marathon Challenge?
Very Difficultharder than 81% of marathons
Flattest / easiestHardest
On our difficulty model, Clare Burren Marathon Challenge plays about 24 minutes slower than an average road marathon for a 3:30 runner. It ranks #224 hardest of 1150 marathons we analyse, and #2 of 11 in Ireland. Use the calculator above to see the exact adjusted time for your own goal pace.
What will you run at Clare Burren Marathon Challenge?
Estimated finish times on this course versus the same effort on an average road marathon, based on its elevation, surface, and expected race-day temperature.
| Average-course time | On Clare Burren Marathon Challenge | Difference |
|---|---|---|
| 3:00:00 | 3:12:18 | +12:18 |
| 3:30:00 | 3:49:06 | +19:06 |
| 4:00:00 | 4:26:39 | +26:39 |
| 4:30:00 | 5:04:56 | +34:56 |
| 5:00:00 | 5:43:52 | +43:52 |
| 5:30:00 | 6:23:26 | +53:26 |
| 6:00:00 | 7:03:35 | +1:03:35 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Clare Burren Marathon Challenge 2027 Course Analysis
Clare Burren Marathon Challenge is a full marathon held in Ballyvaughan, Ireland. It is scheduled for Monday 24 May 2027. The course is run on road surface with 670m of total climbing, with its high point near 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 climbing - well above the average road marathon - topping out around 291m above sea level. Hill training is essential, and you should expect a slower finish time than on 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 racing. Road courses allow for consistent pacing and are typically the best choice for a personal best.
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.
Marathons of similar difficulty
If Clare Burren Marathon Challenge fits your goal, these courses play out about the same on our difficulty model.