Surface unknown — likely unpaved · ranked
6916.2 m · net rise 613.8 m · total ascent 625.8 m · overall 8.9% · evidence quality B (good) · Stuhlfelden · Salzburg
Shape: sustained — 30% of the climbing sits in a quarter of the distance; longest continuous stretch at 10%+ is 336 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 GIP.at road network, OpenStreetMap and a second terrain model, 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.
Lane near Wilhelmsdorf (Stuhlfelden, Salzburg) is 6916.2 m long at 8.9% overall; its steepest 25 m averages ≈15.9% and its steepest 100 m ≈14.0%, measured from Austria's national 1 m airborne-laser terrain model along the mapped road centreline.
Gradient ladder what do windows mean?
| Window | Maximum | Located at | |
|---|---|---|---|
| 2 m (diagnostic) | ≈23% | 721–723 m | under overhead cover terrain reads 85.7% at 4168–4170 m across a structure — excluded |
| 3 m (diagnostic) | ≈22% | 721–724 m | under overhead cover terrain reads 75.8% at 4167–4170 m across a structure — excluded |
| 5 m | ≈20% | 721–726 m | under overhead cover terrain reads 66.2% at 4167–4172 m across a structure — excluded |
| 10 m | ≈19% | 721–731 m | under overhead cover terrain reads 50.1% at 4166–4176 m across a structure — excluded |
| 20 m | ≈16.6% | 4998–5018 m | under overhead cover terrain reads 33.4% at 5469–5489 m across a structure — excluded |
| 25 m | ≈15.9% | 4994–5019 m | under overhead cover terrain reads 28.7% at 5464–5489 m across a structure — excluded |
| 50 m | ≈14.4% | 4969–5019 m | under overhead cover terrain reads 19.1% at 5439–5489 m across a structure — excluded |
| 100 m | ≈14.0% | 4997–5097 m | under overhead cover terrain reads 15.3% at 5389–5489 m across a structure — excluded |
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.
Surface: GIP.at, Austria's official transport graph records no surface for this road; the map may tell you more.
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 · Share this climb
Route colour = gradient over a 25 m window: <10% 10–20% 20–25% ≥25%
Route line = the road surface as the LiDAR survey finds it. Basemap roads are for orientation and may sit a few metres off.
© OpenStreetMap contributors · topo tiles © OpenTopoMap (CC-BY-SA) · vector tiles OpenFreeMap · aerial imagery © basemap.at (CC BY 4.0)
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).
Measurement card
| Elevation | BEV ALS DTM 1 m — ALS DTM Höhenraster 1 m (Bundesamt für Eich- und Vermessungswesen with the Länder), EPSG:3035 |
|---|---|
| Resolution / CRS | 1.0 m grid, EPSG:3035; sampled every 1.0 m, bilinear interpolation |
| Tiles | E4511-N2686, E4512-N2686, E4512-N2687, E4512-N2688, E4513-N2687, E4513-N2688, E4514-N2687, E4514-N2688 |
| Road centreline | OpenStreetMap (local PBF extract) |
| Quality status | evidence quality B; caveated windows: canopy or structure, replay excluded min, structure excluded |
| Analysis | OCL 0.1.0, analysis 0.1.0, run at-run2-260911, calculated 2026-09-11 |
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:3035",
"elevation_resolution_m": 1.0,
"elevation_tiles": [
"data/cache/at/bev-als_dtm_E4511-N2686.tif",
"data/cache/at/bev-als_dtm_E4512-N2686.tif",
"data/cache/at/bev-als_dtm_E4512-N2687.tif",
"data/cache/at/bev-als_dtm_E4512-N2688.tif",
"data/cache/at/bev-als_dtm_E4513-N2687.tif",
"data/cache/at/bev-als_dtm_E4513-N2688.tif",
"data/cache/at/bev-als_dtm_E4514-N2687.tif",
"data/cache/at/bev-als_dtm_E4514-N2688.tif"
],
"calculated_at": "2026-09-11T15:55:35+00:00",
"road_source": "OpenStreetMap (local PBF extract)",
"road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
"osm_pbf_path": "data/cache/pbf/austria-2026-09-11-batch.osm.pbf",
"osm_snapshot": "",
"run_id": "at-run2-260911",
"elevation_provider": "BEV ALS DTM 1 m",
"elevation_licence": "Creative Commons Attribution 4.0 (CC BY 4.0) \u2014 \u00a9 BEV / L\u00e4nder, data.gv.at",
"elevation_dataset": "ALS DTM H\u00f6henraster 1 m (Bundesamt f\u00fcr Eich- und Vermessungswesen with the L\u00e4nder), EPSG:3035",
"elevation_tile_ids": [
"E4511-N2686",
"E4512-N2686",
"E4512-N2687",
"E4512-N2688",
"E4513-N2687",
"E4513-N2688",
"E4514-N2687",
"E4514-N2688"
],
"elevation_blocks": [
"N2650000E4500000@2022-09-15"
],
"climb_origin": "discovered",
"license": "ODbL-1.0",
"license_url": "https://howsteep.org/licensing"
}