BETA — measurements and names under active refinement. Seen a sign, a gate, or a better name? Report it (photos welcome).

Hardknott Pass

4858.1 m · gain 138.3 m · overall 2.8% · Harter Fell · Cumberland

Shape: stepped — 50% of the climbing sits in a quarter of the distance; longest continuous stretch at 10%+ is 592 m.

Known from: 100 Greatest Cycling Climbs (Simon Warren).

Gradient ladder what do windows mean?

Window	Maximum	Located at
2 m (diagnostic)	≈54.7%	1–3 m	under overhead cover terrain reads 64.1% at 3956–3958 m across a structure — excluded
3 m (diagnostic)	≈48.4%	0–3 m	under overhead cover terrain reads 64.0% at 3954–3957 m across a structure — excluded
5 m	≈33.5%	0–5 m	under overhead cover terrain reads 57.7% at 3953–3958 m across a structure — excluded
10 m	28.1%	2455–2465 m
20 m	26.8%	2448–2468 m
25 m	25.9%	2446–2471 m
50 m	24.2%	2695–2745 m
100 m	22.6%	2450–2550 m

descends_at_end Extent detection suggests reviewing where this climb starts/ends.

Map

Check this route yourself: Google Maps route via their router · Street View at the base where coverage exists · OSM way 160456411 highlights the mapped road · geojson.io our exact measured line · OpenTopoMap

Hardknott Pass LiDAR hillshade map with contours

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": 1.0,
  "elevation_tiles": [
    "data/cache/england/dtm_1m/E320000_N500000_2000m.tif",
    "data/cache/england/dtm_1m/E322000_N500000_2000m.tif",
    "data/cache/england/dtm_1m/E324000_N500000_2000m.tif"
  ],
  "calculated_at": "2026-08-12T09:12:18+00:00",
  "road_source": "OpenStreetMap",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_ids": [
    160456411,
    600321484,
    600321473,
    1093001360,
    1093001359
  ],
  "osm_versions": {
    "160456411": 17,
    "600321484": 8,
    "600321473": 13,
    "1093001360": 1,
    "1093001359": 2
  },
  "osm_timestamps": {
    "160456411": "2026-06-06T14:47:27Z",
    "600321484": "2025-06-08T20:35:55Z",
    "600321473": "2025-06-08T20:35:55Z",
    "1093001360": "2022-09-08T22:06:44Z",
    "1093001359": "2024-07-19T21:37:14Z"
  },
  "osm_retrieved_at": "2026-08-12T09:12:18+00:00",
  "elevation_provider": "Environment Agency",
  "elevation_dataset": "EA LIDAR Composite DTM 1m (2022)",
  "elevation_licence": "Open Government Licence v3 \u2014 \u00a9 Environment Agency",
  "elevation_coverage_id": "13787b9a-26a4-4775-8523-806d13af58fc__Lidar_Composite_Elevation_DTM_1m",
  "elevation_tile_ids": [
    "E320000_N500000_2000m.tif",
    "E322000_N500000_2000m.tif",
    "E324000_N500000_2000m.tif"
  ],
  "climb_origin": "competition",
  "signed_gradient_pct": 30,
  "signed_source": "OSM incline tags (30%) on summit segments; famous 30% warning signs both approaches",
  "notes": "Cumbria. The canonical brutal UK pass; National HC venue territory."
}