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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. Pages listed but not ranked follow the ranked rows, unnumbered.
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 Chapelle | Seine-Maritime | ≈caveated23.5% | 371 m | 61 m | 16.6% | Paved | Good |
| 2 | Rue Louis Pasteur | Seine-Maritime | 23.2% | 931 m | 87 m | 9.4% | Paved | High |
| 3 | Rue Principale | Seine-Maritime | ≈caveated22.1% | 1307 m | 56 m | 4.3% | Paved | Good |
| 4 | Rue de la Côte Verte | Seine-Maritime | 21.8% | 254 m | 39 m | 15.2% | Paved | High |
| 5 | Rue du Progrès | Seine-Maritime | 21.7% | 558 m | 35 m | 6.3% | Paved | High |
| 6 | Route des Charmilles | Seine-Maritime | ≈caveated21.7% | 1338 m | 80 m | 6.0% | Paved | Good |
| 7 | Rue du Président Coty | Seine-Maritime | ≈caveated21.4% | 1132 m | 123 m | 10.8% | Paved | Good |
| 8 | Lane near Côte des Perrets | Seine-Maritime | 21.4% | 412 m | 37 m | 9.1% | Mixed surface | Good |
| 9 | Lane near Quevillon | Seine-Maritime | 21.3% | 540 m | 70 m | 12.9% | Paved | High |
| 10 | Chemin de Flamanville | Seine-Maritime | ≈caveated21.2% | 721 m | 41 m | 5.7% | Paved | Needs confirmation |
| 11 | Boulevard Jean Jaurès | Seine-Maritime | 21.2% | 1001 m | 60 m | 6.0% | Paved | High |
| 12 | Lane near La Perruque | Seine-Maritime | 20.8% | 284 m | 35 m | 12.2% | Paved | High |
| 13 | Lane near Les Maisonnettes | Seine-Maritime | 20.5% | 698 m | 41 m | 5.8% | Paved | High |
| 14 | Rue du Fournaie | Seine-Maritime | ≈caveated20.1% | 1374 m | 81 m | 5.9% | Paved | Good |
| 15 | Passage Chapelle | Seine-Maritime | 20.0% | 412 m | 29 m | 7.0% | Paved | High |
| – | Sente de la Croix de l'Épine · not ranked | Seine-Maritime | ≈caveated27.9% | 323 m | 54 m | 16.7% | Mixed surface | Good |
| – | Lane near Les Basses Falaises · not ranked | Seine-Maritime | 26.1% | 771 m | 94 m | 12.2% | Gravel / dirt track | High |
| – | Chemin de l'Hermitage · not ranked | Seine-Maritime | ≈caveated25.4% | 741 m | 80 m | 10.8% | Paved | Good |
| – | Lane near Quenneport · not ranked | Seine-Maritime | ≈caveated23.5% | 207 m | 35 m | 16.9% | Gravel / dirt track | Good |
| – | Impasse des Pentes · not ranked | Seine-Maritime | ≈caveated22.5% | 292 m | 29 m | 9.9% | Mixed surface | Good |
| – | Lane near Beaumont · not ranked | Seine-Maritime | ≈caveated20.4% | 241 m | 24 m | 10.2% | Gravel / dirt track | Good |