Trail
DMDB
42 km
88.00 EUR
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Race month
November · 7°–13°
Field size
1–1,000
Distances
42k
Distances
Finish-time calculator
Your finish time
Slide to your target pace — and see when you’ll hit the line.
6:00
min / km
← faster · 2:0012:00 · easier →
4:12:00
Estimated finish · 42 km
10 km1:00:00
5 km30:00
Where am I when? · Splits
Start
0:00
5 km
30:00
10 km
1:00:00
15 km
1:30:00
20 km
2:00:00
Half
2:06:35
25 km
2:30:00
30 km
3:00:00
35 km
3:30:00
40 km
4:00:00
Finish
4:12:00
Estimates only · form, weather, and hills can change the result.
Course & climate
Typical weather in Saint-Herblain
Monthly averages based on historical data (2000–present).
November
13°7°
- Sunrise
- 08:11
- Sunset
- 17:32
What to expect
What makes this race distinct — for training and race day.
Des Marais & Des Bosses is an annual adventure race in Saint-Herblain, France, combining challenging terrains and a vibrant community atmosphere.
The field
1–1,000
Catering & aid stations
Un ravitaillement complet (solide et liquide) sera proposé sur le site de départ/arrivée des relayeurs. Un ravitaillement de fin de course sera mis en place pour la DMDB, le Souffle Solidaire et Des Bossinettes.
Pacers
Pacers are not allowed on the course. Any form of accompaniment is prohibited on the entire route (bikes, mountain bikes, scooters or motorized vehicles).
Bib by mail
Yes
Results
Online results service
Course
Marked & secured
Livestream
Yes
What does it cost?
| DMDB | 88.00 EUR |
|---|
Stay & get to the start
Getting there
Assumed starting point
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Estimating travel…
Hotels near the start
Route maps
FAQ
Des vestiaires et douches sont-ils prévus ?
Pas de vestiaires ni de douches prévus.
Un parking vélo est-il prévu ?
Oui, un stationnement vélo est prévu.
Existe-t-il une consigne pour déposer ses affaires ?
Pas de consignes.
Last updated: Oct 22, 2026, 02:13:53 PM
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