Longcroft to Braeface°
1749.9 m · net rise 66.4 m · total ascent 115.7 m · overall 3.8% · confidence: good · Longcroft · Falkirk
Shape: sustained — 44% of the climbing sits in a quarter of the distance; longest continuous stretch at 10%+ is 146 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 (56.0003, -3.9319)'). Corrections welcome.
≈ Overhead cover (tree canopy or structures) spans 19% of this route — detected by comparing the surface model (DSM, treetops and rooftops) against the terrain model (DTM, bare ground). Under cover the bare-ground model is built from fewer laser returns, so metre-scale readings can wobble; maxima whose window sits in a covered zone are marked ≈ below — less certain — the flag does not say whether the true value is higher or lower. Longer windows average over more clean ground and are steadier.
Gradient ladder what do windows mean?
| Window | Maximum | Located at | |
|---|---|---|---|
| 2 m (diagnostic) | ≈46% | 744–746 m | under overhead cover terrain reads 286.4% at 493–495 m across a structure — excluded |
| 3 m (diagnostic) | ≈42% | 745–748 m | under overhead cover terrain reads 192.1% at 492–495 m across a structure — excluded |
| 5 m | ≈33% | 744–749 m | under overhead cover terrain reads 113.5% at 492–497 m across a structure — excluded |
| 10 m | ≈28% | 747–757 m | under overhead cover terrain reads 57.8% at 492–502 m across a structure — excluded |
| 20 m | ≈23.9% | 744–764 m | under overhead cover terrain reads 29.7% at 737–757 m across a structure — excluded |
| 25 m | ≈24.1% | 745–770 m | under overhead cover terrain reads 29.4% at 732–757 m across a structure — excluded |
| 50 m | ≈18.4% | 163–213 m | under overhead cover terrain reads 23.0% at 720–770 m across a structure — excluded |
| 100 m | ≈17.3% | 121–221 m | under overhead cover |
may_start_earlier 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 · 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
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": 0.5,
"elevation_tiles": [
"data/cache/scotland/phase-5/dtm/NS77NE.tif",
"data/cache/scotland/phase-5/dtm/NS78SE.tif"
],
"calculated_at": "2026-08-17T21:59:23+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": "Scottish Public Sector LiDAR Phase 5 50cm",
"elevation_tile_ids": [
"NS77NE",
"NS78SE"
],
"climb_origin": "discovered",
"notes": "Coarse pass: max 13.0% over 200 m (Terrain 50), gain 45.2 m over 1555 m way. EXTENDED by graph walk: +2 segment(s) at base, +0 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. DEDUPE: absorbed 1 overlapping proposal(s): station-road-4",
"naming_note": "auto-named from gazetteer (hypothesis, unreviewed); discovered as 'Discovered lane (56.0003, -3.9319)'"
}