Rerwick Road
5777.8 m · net rise 157.8 m · total ascent 231.6 m · overall 2.7% · confidence: good · Burn Geo · Shetland Islands
Shape: sustained — 45% of the climbing sits in a quarter of the distance; longest continuous stretch at 10%+ is 167 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.
Gradient ladder what do windows mean?
| Window | Maximum | Located at | |
|---|---|---|---|
| 2 m (diagnostic) | ≈32% | 2414–2416 m | under overhead cover terrain reads 58.3% at 2775–2777 m across a structure — excluded |
| 3 m (diagnostic) | ≈27% | 2414–2417 m | under overhead cover terrain reads 57.4% at 2774–2777 m across a structure — excluded |
| 5 m | ≈22% | 2414–2419 m | under overhead cover terrain reads 29.3% at 2774–2779 m across a structure — excluded |
| 10 m | ≈17% | 3872–3882 m | under overhead cover terrain reads 17.6% at 2774–2784 m across a structure — excluded |
| 20 m | 16.4% | 3917–3937 m | |
| 25 m | 16.2% | 3915–3940 m | |
| 50 m | 15.0% | 3904–3954 m | |
| 100 m | 14.6% | 3867–3967 m |
descends_at_start 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": 1.0,
"elevation_tiles": [
"data/cache/scotland/phase-2/dtm/HU31.tif",
"data/cache/scotland/phase-2/dtm/HU32.tif"
],
"calculated_at": "2026-08-18T18:40:30+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 2 1m",
"elevation_tile_ids": [
"HU31",
"HU32"
],
"climb_origin": "discovered",
"notes": "Coarse pass: max 8.5% over 200 m (Terrain 50), gain 22.2 m over 3389 m way. EXTENDED by graph walk: +0 segment(s) at base, +4 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. DEDUPE: absorbed 2 overlapping proposal(s): discovered-lane-59-9579-1-3068, vanlop-road ADOPTED (Scotland launch 2026-08-18): big-gain."
}