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Seine-Maritime — road climbs measured by LiDAR
All 21 published climbs in Seine-Maritime, 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 | Sente de la Croix de l'Épine | Seine-Maritime | ≈caveated27.9% | 323 m | 54 m | 16.7% | mixed surface | Good |
| 2 | Discovered lane (49.5485, 0.0849) | Seine-Maritime | 26.1% | 771 m | 94 m | 12.2% | gravel | High |
| 3 | Chemin de l'Hermitage | Seine-Maritime | ≈caveated25.4% | 741 m | 80 m | 10.8% | Good | |
| 4 | Sente de la Chapelle | Seine-Maritime | ≈caveated23.5% | 371 m | 61 m | 16.6% | paved | Good |
| 5 | Discovered lane (49.3918, 1.0056) | Seine-Maritime | ≈caveated23.5% | 207 m | 35 m | 16.9% | gravel | Good |
| 6 | Rue Louis Pasteur | Seine-Maritime | 23.2% | 931 m | 87 m | 9.4% | paved | High |
| 7 | Impasse des Pentes | Seine-Maritime | ≈caveated22.5% | 292 m | 29 m | 9.9% | mixed surface | Good |
| 8 | Rue Principale | Seine-Maritime | ≈caveated22.1% | 1307 m | 56 m | 4.3% | Good | |
| 9 | Rue de la Côte Verte | Seine-Maritime | 21.8% | 254 m | 39 m | 15.2% | paved | High |
| 10 | Rue du Progrès | Seine-Maritime | 21.7% | 558 m | 35 m | 6.3% | paved | High |
| 11 | Route des Charmilles | Seine-Maritime | ≈caveated21.7% | 1338 m | 80 m | 6.0% | paved | Good |
| 12 | Rue du Président Coty | Seine-Maritime | ≈caveated21.4% | 1132 m | 123 m | 10.8% | paved | Good |
| 13 | Discovered lane (49.4127, 1.1229) | Seine-Maritime | 21.4% | 412 m | 37 m | 9.1% | mixed surface | Good |
| 14 | Discovered lane (49.4153, 0.9588) | Seine-Maritime | 21.3% | 540 m | 70 m | 12.9% | paved | High |
| 15 | Chemin de Flamanville | Seine-Maritime | ≈caveated21.2% | 721 m | 41 m | 5.7% | paved | Needs confirmation |
| 16 | Boulevard Jean Jaurès | Seine-Maritime | 21.2% | 1001 m | 60 m | 6.0% | paved | High |
| 17 | Discovered lane (49.7471, 0.4679) | Seine-Maritime | 20.8% | 284 m | 35 m | 12.2% | paved | High |
| 18 | Discovered lane (49.5725, 1.1595) | Seine-Maritime | 20.5% | 698 m | 41 m | 5.8% | paved | High |
| 19 | Discovered lane (50.0291, 1.4412) | Seine-Maritime | ≈caveated20.4% | 407 m | 25 m | 6.2% | gravel | Good |
| 20 | Rue du Fournaie | Seine-Maritime | ≈caveated20.1% | 1374 m | 81 m | 5.9% | paved | Good |
| 21 | Passage Chapelle | Seine-Maritime | 20.0% | 412 m | 29 m | 7.0% | paved | High |