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Loire-Atlantique — road climbs measured by LiDAR
All 5 published climbs in Loire-Atlantique, ranked by their steepest 25 m and measured on IGN’s LiDAR HD 0.5 m laser surveys.
Surface: · Caveated rows: (ranks stay the true ranks) · every published row is listed here — the toggles filter this page without hiding anything from the links above.
| # | Climb | Department | Max 25 m | Length | Net rise | Overall | Surface | Evidence |
|---|---|---|---|---|---|---|---|---|
| 1 | Rue des Grands Coteaux | Loire-Atlantique | ≈caveated25.9% | 405 m | 44 m | 10.8% | paved | Good |
| 2 | Chemin du Sault | Loire-Atlantique | 24.2% | 286 m | 44 m | 15.4% | paved | Good |
| 3 | Discovered lane (47.3621, -1.2838) | Loire-Atlantique | 21.3% | 459 m | 57 m | 12.5% | paved | Good |
| 4 | Route du Mont Piron | Loire-Atlantique | 20.4% | 526 m | 58 m | 11.1% | paved | Good |
| 5 | Discovered lane (47.3605, -1.3000) | Loire-Atlantique | 20.3% | 880 m | 53 m | 6.0% | gravel | High |