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Col de la Croix de Bauzon from Saint-Étienne-de-Lugdarès

12625.3 m · net rise 274.3 m · total ascent 374.9 m · overall 2.2% · evidence quality B (good) · Saint-Étienne-de-Lugdarès · Ardèche ·

Shape: sustained — 38% of the climbing sits in a quarter of the distance; longest continuous stretch at 10%+ is 62 m.

Not yet matched against documented climbs — the measurement stands on its own.

Gradient ladder what do windows mean?

WindowMaximumLocated at
2 m (diagnostic)≈13%11556–11558 munder overhead cover terrain reads 332.0% at 8985–8987 m across a structure — excluded
3 m (diagnostic)≈12%12359–12362 munder overhead cover terrain reads 221.9% at 8986–8989 m across a structure — excluded
5 m≈12%12357–12362 munder overhead cover terrain reads 133.5% at 8982–8987 m across a structure — excluded
10 m≈12%12352–12362 munder overhead cover terrain reads 67.7% at 8981–8991 m across a structure — excluded
20 m≈11.4%12349–12369 munder overhead cover terrain reads 33.0% at 8981–9001 m across a structure — excluded
25 m≈11.4%12345–12370 munder overhead cover terrain reads 27.3% at 12190–12215 m across a structure — excluded
50 m≈11.0%12336–12386 munder overhead cover terrain reads 17.9% at 12190–12240 m across a structure — excluded
100 m≈10.4%12296–12396 munder overhead cover terrain reads 12.8% at 12190–12290 m across a structure — excluded

Map

Check this route yourself: Google Maps route via their router · Street View at the base where coverage exists · geojson.io our exact measured line · OpenTopoMap

This climb's data: OCL JSON — the full gradient ladder, quality flags and provenance in the OpenClimb Ladder format.

Surface: paved throughout, according to BD TOPO®, IGN's national topographic database.

Measured, not vetted. This page records what the laser record shows about the road's shape — nothing more. Nobody has necessarily ridden or inspected this road for the survey, and a page here is not a recommendation and no guarantee that the road is open, surfaced, rideable or safe. Gates, private sections, missing rights of way and hazards do not show up in elevation data. Check access and conditions on the ground and make your own judgment.

Ridden it, or know better? Submit data for this climb no account needed ·

Route colour = gradient over a 25 m window: <10% 10–20% 20–25% ≥25%

  © OpenStreetMap contributors · topo tiles © OpenTopoMap (CC-BY-SA) · vector tiles OpenFreeMap · aerial imagery © IGN, BD ORTHO® (Licence Ouverte Etalab 2.0)

Col de la Croix de Bauzon from Saint-Étienne-de-Lugdarès LiDAR hillshade map with contours

Profile

The map, profile and gradient chart share one position — move your pointer over them and the marker follows. Colors are the gradient bands; the shaded span is the steepest 25 m. Any 25 m figure is good to about a point either way (why).

Col de la Croix de Bauzon from Saint-Étienne-de-Lugdarès elevation profile
Col de la Croix de Bauzon from Saint-Étienne-de-Lugdarès rolling gradient profile
 

Measurement card

ElevationIGN LiDAR HD MNT 0.5 m — LiDAR HD — MNT (sol) et MNS (surface), 0,50 m (Institut national de l'information géographique et forestière), RGF93 / Lambert-93 EPSG:2154, altitudes IGN69
Resolution / CRS0.5 m grid, EPSG:2154; sampled every 1.0 m, bilinear interpolation
TilesE775-N6394, E775-N6395, E776-N6394, E776-N6395, E777-N6393, E777-N6394, E778-N6393, E778-N6394, E779-N6393, E779-N6394, E780-N6393, E780-N6394, E781-N6393, E781-N6394, E782-N6393, E782-N6394, E783-N6393, E783-N6394, E784-N6393, E784-N6394, E785-N6393, E786-N6393, E787-N6393
Road centrelineOpenStreetMap (local PBF extract)
Quality statusevidence quality B; caveated windows: structure excluded, structure excluded min
AnalysisOCL 0.1.0, analysis 0.1.0, run fr-mc6, calculated 2026-09-22

Provenance

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  "calculated_at": "2026-09-22T18:01:19+00:00",
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  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
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  },
  "climb_origin": "named-pass",
  "via": [
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  ],
  "structure_own_ways": 19,
  "structure_mask_ranges_m": [
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      4319.5,
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    [
      1549.6,
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  "mask_basin_extension_m": 2.0,
  "carriageway": {
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    "stations_resolved": 511,
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    "width_p10_m": 6.75,
    "width_min_m": 1.0,
    "width_max_m": 12.0,
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    "unbounded_share": 0.861,
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    "width_at_max25_m": 10.25,
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      "break_min_m": 0.3,
      "stations_failed": 0
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  "license_url": "https://howsteep.org/licensing"
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