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Loir-et-Cher — road climbs measured by LiDAR
All 2 published climbs in Loir-et-Cher, ranked by their steepest 25 m and measured on IGN’s LiDAR HD 0.5 m laser surveys.
Surface: Paved roads All surfaces · Caveated rows: Show Hide (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 de la Chapelle Loir-et-Cher ≈ caveated 22.6%213 m 38 m 18.0% paved Needs confirmation 2 Rue Chaufour Loir-et-Cher ≈ caveated 20.5%429 m 46 m 10.8% paved Good
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This page last changed 26 September 2026 — what changed across the survey .
Gradients are LiDAR-derived road-centreline measurements over stated plan distances — not surveyed asphalt gradients. Windows of 2–3 m are diagnostic only (raster-noise scale) and are never used in rankings. Nothing on this site is a route recommendation: climbs are measured from open data, not vetted, inspected or guaranteed. Access, rights of way, surfaces, traffic and safety are yours to judge on the ground.
Road geometry © OpenStreetMap contributors (ODbL). Elevation: LiDAR HD 0.5 m digital terrain model © IGN (Institut national de l’information géographique et forestière), open licence Etalab 2.0; road classes, surfaces, access and carriageway widths from BD TOPO® © IGN, open licence Etalab 2.0. Reuse of this site's own work: any individual climb's page and charts CC BY 4.0, the dataset ODbL 1.0 — details .