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Lower Bayble to Pabail Uarach°

277.0 m · net rise 31.5 m · overall 11.4% · confidence: high · Lower Bayble · Na h-Eileanan an Iar

Shape: stepped — 45% of the climbing sits in a quarter of the distance; longest continuous stretch at 10%+ is 142 m.

Found purely from mapping and LiDAR data, and not yet matched against books, race records or lists — it may be well known to locals under a name we've never heard. It was cross-checked against the OS road network, surface models and map tags, but a discovery can still be an artifact of the terrain model or the map. Treat it as a well-evidenced hypothesis until someone has ridden it. If you know this road, tell us what you found — photographs, corrections and local knowledge all welcome; the map links below let you scout it first.

° The name is provisional: this climb is not yet matched to a documented name, so it was named from nearby map places. There is no evidence of local usage — (auto-named from gazetteer (hypothesis, unreviewed); discovered as 'Discovered lane (58.2029, -6.2179)'). Corrections welcome.

Gradient ladder what do windows mean?

WindowMaximumLocated at
2 m (diagnostic)33%190–192 m
3 m (diagnostic)27%172–175 m
5 m23%67–72 m
10 m22%64–74 m
20 m21.8%54–74 m
25 m21.6%52–77 m
50 m21.1%44–94 m
100 m19.1%36–136 m

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.

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

  © OpenStreetMap contributors · topo tiles © OpenTopoMap (CC-BY-SA) · vector tiles OpenFreeMap

Lower Bayble to Pabail Uarach LiDAR hillshade map with contours

Profile

Lower Bayble to Pabail Uarach elevation profile Lower Bayble to Pabail Uarach rolling gradient profile

Provenance

{
  "analysis_version": "0.1.0",
  "sample_interval_m": 1.0,
  "interpolation": "bilinear",
  "smoothing": "none",
  "gradient_windows_m": [
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
  ],
  "diagnostic_windows_m": [
    2.0,
    3.0
  ],
  "elevation_crs": "EPSG:27700",
  "elevation_resolution_m": 0.25,
  "elevation_tiles": [
    "data/cache/scotland/outer-hebrides-2019/dtm/NB5231.tif"
  ],
  "calculated_at": "2026-08-18T18:40:57+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/scotland-2026-08-14-roads.osm.pbf",
  "osm_snapshot": "2026-08-13T20:21:01Z",
  "elevation_provider": "Scottish Remote Sensing Portal (AWS Open Data, srsp-open-data)",
  "elevation_licence": "Open Government Licence v3 \u2014 \u00a9 Scottish Government, SEPA and partners; Crown copyright",
  "elevation_dataset": "Outer Hebrides LiDAR 25cm (2019)",
  "elevation_tile_ids": [
    "NB5231"
  ],
  "route_summit_trim_m": 113.4,
  "route_summit_trim_loss_m": 8.1,
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 13.5% over 200 m (Terrain 50), gain 22.9 m over 390 m way. KEPT at seed extent: no ascending continuation (min_avg=2.0%). ADOPTED (Scotland launch 2026-08-18): clean-steep. AUTO-NAMED from gazetteer (hypothesis, unreviewed): was 'Discovered lane (58.2029, -6.2179)'.",
  "naming_note": "auto-named from gazetteer (hypothesis, unreviewed); discovered as 'Discovered lane (58.2029, -6.2179)'"
}