Les Boucles Ardennaises
La Roche-en-Ardenne, Belgium · Monday 7 June 2027
Les Boucles Ardennaises is a scenic event held in La Roche-en-Ardenne, Belgium, featuring a half marathon, full marathon, and 10 km nature trail. The courses pass through the beautiful Ardenne landscapes, following the Ourthe valley and offering breathtaking views of working farms and forests. The event is known for its challenging terrain, with runners navigating small paved roads, dirt paths, and trails.
Difficulty Calculator
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:m
:s
Adjusted Time
5:40:30
Time difference: +100.5 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain1390m
Elevation High565m
Elevation Low214m
Weather Forecast
High15°C
Low11°C
Chance of Rain100%
How hard is Les Boucles Ardennaises?
Very Difficultharder than 98% of marathons
Flattest / easiestHardest
On our difficulty model, Les Boucles Ardennaises plays about 86 minutes slower than an average road marathon for a 3:30 runner. It ranks #18 hardest of 1151 marathons we analyse, and #1 of 10 in Belgium. Use the calculator above to see the exact adjusted time for your own goal pace.
What will you run at Les Boucles Ardennaises?
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 Les Boucles Ardennaises | Difference |
|---|---|---|
| 3:00:00 | 4:03:24 | +1:03:24 |
| 3:30:00 | 4:51:16 | +1:21:16 |
| 4:00:00 | 5:40:30 | +1:40:30 |
| 4:30:00 | 6:31:05 | +2:01:05 |
| 5:00:00 | 7:22:58 | +2:22:58 |
| 5:30:00 | 8:16:04 | +2:46:04 |
| 6:00:00 | 9:10:22 | +3:10:22 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Les Boucles Ardennaises 2027 Course Analysis
Les Boucles Ardennaises is a full marathon held in La Roche-en-Ardenne, Belgium. It is scheduled for Monday 7 June 2027. The course is run on trail surface with 1390m of total climbing, with its high point near 565m above sea level. For registration and full race details, visit the official Les Boucles Ardennaises website.
Elevation Profile
This is a very challenging course with 1390m of total climbing - well above the average trail marathon - topping out around 565m 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 June, the expected race day conditions are as follows. Near-ideal running temperatures are expected, ranging from 11°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: Trail
Les Boucles Ardennaises is a trail race, meaning the course includes unpaved surfaces such as dirt, gravel, or forest paths. Trail surfaces are usually slower than the road equivalent - often by 10-20% - because of uneven footing, technical sections, and frequently steeper gradients, though a smooth, non-technical or downhill trail can run faster than that suggests. Trail-specific shoes with good grip are recommended.
Looking for an easier marathon or a tougher challenge? You can also compare Les Boucles Ardennaises against other marathons to find the right race for your goals.
Marathons of similar difficulty
If Les Boucles Ardennaises fits your goal, these courses play out about the same on our difficulty model.
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