Semi Marathon Nantes
Nantes, France · Monday 26 April 2027
Transport yourself to the heart of France and unlock the magic of the Semi Marathon Nantes! This is a place where running blends with everything great. You are set to have a bucket-list test among gorgeous scenery and one of the world's most amazing destinations. Join and run among history! It will be hard to match the energy in a city like Nantes, as a region known for blending architectural excellence with nature's tranquility.
Difficulty Calculator
h
:m
:s
Adjusted Time
1:54:25
Time difference: +9.4 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain361m
Elevation High125m
Elevation Low-15m
Weather Forecast
High15°C
Low11°C
Chance of Rain85%
How hard is Semi Marathon Nantes?
Difficultharder than 80% of half marathons
Flattest / easiestHardest
On our difficulty model, Semi Marathon Nantes plays about 9 minutes slower than an average road half marathon for a 1:30 runner. It ranks #88 hardest of 450 half marathons we analyse, and #1 of 7 in France. Use the calculator above to see the exact adjusted time for your own goal pace.
What will you run at Semi Marathon Nantes?
Estimated finish times on this course versus the same effort on an average road half marathon, based on its elevation, surface, and expected race-day temperature.
| Average-course time | On Semi Marathon Nantes | Difference |
|---|---|---|
| 1:30:00 | 1:37:00 | +07:00 |
| 1:45:00 | 1:54:25 | +09:25 |
| 2:00:00 | 2:12:02 | +12:02 |
| 2:15:00 | 2:29:49 | +14:49 |
| 2:30:00 | 2:47:47 | +17:47 |
| 2:45:00 | 3:05:55 | +20:55 |
| 3:00:00 | 3:24:13 | +24:13 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Semi Marathon Nantes 2027 Course Analysis
Semi Marathon Nantes is a half marathon held in Nantes, France. It is scheduled for Monday 26 April 2027. The course is run on road surface with 361m of total climbing, with its high point near 125m above sea level. For registration and full race details, visit the official Semi Marathon Nantes website.
Elevation Profile
This is a hilly course with 361m of total climbing, rising to around 125m above sea level. It pays to train on hills and to pace the climbs conservatively.
Expected Race Day Weather
Based on historical weather data for April, 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 (85%). Runners should prepare for wet conditions, including appropriate footwear and clothing choices.
Surface Type: Road
Semi Marathon Nantes 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 Semi Marathon Nantes against other half marathons to find the right race for your goals.
Half marathons of similar difficulty
If Semi Marathon Nantes fits your goal, these courses play out about the same on our difficulty model.
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