France · Brittany (Morbihan)
How Hard Is L'Ultra Marin Grand Raid 175km? (7 m/km, 77.4% Flat, and What 175km of Coastal Endurance Actually Demands)
Distance
175 km
Date
Droit d’inscription
168 EUR
€ / km
€0.96
Nouvelle date en attente
Cette course a déjà eu lieu. La date de la prochaine édition est en attente.
Brittany’s seaside ultra-party: runnable coastal miles, tidal vibes, and huge participation energy.
L'Ultra Marin Grand Raid 175km is a coastal loop around the entire Gulf of Morbihan in Brittany, starting from Vannes on Friday June 27, 2026 at 19:00 and finishing in the same city up to 42 hours later. The course traverses 175km of varied coastal terrain — sandy beaches, salt marshes, dense forest, stone paths — with only ~1,220m D+ (~7 m/km) . With 77.4% flat terrain and a distance-weighted average uphill gradient of 3.93%, this is one of the most runnable 175km courses in the DTR database. The challenge is coastal endurance: time-on-feet, surface variety, tidal conditions, and a night start through the Breton coast. A mid-race boat crossing links Locmariaquer to Port-Navalo at approximately km 114 (~10 minutes) [Official: ultra-marin.fr]. UTMB 100M Index race (confirmed 2022-2025). SOLD OUT — entry was 168 EUR (~€0.96/km) with a €3 Klikego processing fee. 21st edition in 2026; founded 2005. ~10,000 participants across all 8 distances. ~1,832 finishers (2025, UTMB Index). Nantes (NTE) or Rennes (RNS) ~84 min — NOT IS FAR. Suits endurance runners and UTMB qualifiers who want a prestigious coastal race with exceptional accessibility, race-week energy, and authentic Breton character.
Élévation et Terrain
Mètres totaux
1,220m
D+/KM
7.0m/km
Pour référence, le Tor des Géants 330 km a 73 D+/km.
Pente montante moyenne
3.9%
Pente descendante moyenne
-4.1%
Distribution du gradient de montée
| 2–5% | 15.8 km | |
|---|---|---|
| 5–10% | 4 km | |
| 10–15% | 0.4 km | |
| 15–20% | 0 km |
Profil de parcours
AnalysedDétail du terrain
| 11.4% | Montée |
|---|---|
| 77.4% | Plat |
| 11.2% | Descente |
Terrain
Ascensions
Principales montées
| 1 | 0.9 km · 21 m gain starts km 58 · avg 2.3% · max 5.2% |
|---|---|
| 2 | 0.3 km · 21 m gain starts km 116 · avg 6.3% · max 13.3% |
Principales descentes
| 1 | 1.4 km · 27 m drop starts km 114 · avg -2% · max -10.5% |
|---|---|
| 2 | 1.1 km · 25 m drop starts km 67 · avg -2.2% · max -6.4% |
| 3 | 0.8 km · 25 m drop starts km 85 · avg -3% · max -10.7% |
How Hard Is L'Ultra Marin Grand Raid 175km? (7 m/km, 77.4% Flat, and What 175km of Coastal Endurance Actually Demands)
Course Profile — Beaches, Salt Marshes, Forest Paths, and the Boat Crossing That Makes L'Ultra Marin Unlike Any Other Race▼
Q: What is the mid-race boat crossing at L'Ultra Marin Grand Raid? | A: At approximately km 114, runners cross the Gulf of Morbihan by boat from Locmariaquer to Port-Navalo (Arzon) — approximately a 10-minute crossing. This is a unique structural feature of the Grand Raid not present in other DTR database races: a mandatory ferry transfer built into the route, reflecting the geography of the Gulf where a direct coastal path would add significant distance. It creates a memorable mid-race moment — a brief respite on the water with 60km still to run.
Sold Out, €0.96/km, and UTMB 100M Points: The Value and Access Story Behind L'Ultra Marin Grand Raid▼
Q: Is L'Ultra Marin Grand Raid 175km sold out and how do I register? | A: Yes — the 2026 Grand Raid was sold out as of the most recent DTR check. When registration reopens (typically for the following year's edition), it is processed via the Klikego platform — note a €3 processing fee applies. At €168 entry (~€0.96/km), L'Ultra Marin is one of the most affordable UTMB 100M-qualifying races in Europe. Given the consistent annual sell-out, register as early as possible when the window opens. Check ultra-marin.fr for the latest registration status.
Getting to L'Ultra Marin: Nantes or Rennes at 84 Minutes, Train to Vannes, and a 10,000-Person Race Weekend▼
Q: Does L'Ultra Marin Grand Raid 175km qualify for UTMB? | A: Yes. L'Ultra Marin Grand Raid 175km is a UTMB 100M Index race, confirmed across the 2022-2025 editions. Verify the 2026 UTMB Index points allocation at utmb.world before registering, as index values can change between editions. The race is also listed on ITRA; verify current ITRA points at itra.run.
Who Should Run L'Ultra Marin Grand Raid 175km?▼
Q: How do I get to L'Ultra Marin Grand Raid in Vannes? | A: Nantes (NTE) and Rennes (RNS) airports are both approximately 84 minutes from Vannes — the race is NOT IS FAR. Vannes is served by direct TGV and regional rail from both airports and from Paris, making the race accessible by public transport. Book accommodation well in advance: the 10,000-participant race weekend (June 25-28, 2026) fills Vannes hotels quickly. The race starts and finishes at Esplanade Simone Veil in central Vannes.
Fichiers de course
Logistique
Aéroport le plus proche
Nantes (NTE) / Rennes (RNS)
Notes
Start: ~1.25–2 hrs by car/train to Vannes / Public transport: good (train to Vannes) / Accommodation: strong in Vannes & nearby towns; book early (busy weekend)
