Mount Equinox (Skyline Drive)
8464.0 m · net rise 970.3 m · total ascent 980.9 m · overall 11.5% · evidence quality A (high) · Sunderland · Vermont · share
Shape: sustained — 29% of the climbing sits in a quarter of the distance; longest continuous stretch at 10%+ is 978 m.
Matches: Mt. Equinox Uphill (Gear Up for Lyme charity hillclimb) — Long-running race up Skyline Drive.
Gradient ladder what do windows mean?
| Window | Maximum | Located at | |
|---|---|---|---|
| 2 m (diagnostic) | 29% | 6420–6422 m | |
| 3 m (diagnostic) | 27% | 6419–6422 m | |
| 5 m | 22% | 5573–5578 m | |
| 10 m | 22% | 5569–5579 m | |
| 20 m | 20.4% | 5569–5589 m | |
| 25 m | 20.0% | 5569–5594 m | |
| 50 m | 18.0% | 5564–5614 m | |
| 100 m | 16.4% | 5046–5146 m |
Measured on the mapped road line; moving the line 1 m either way reads 18.9–22.1% over 25 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.
Surface: paved throughout, according to each state's road inventory.
Access: Toll road: motor vehicles pay; bicycles — charge unknown (OpenStreetMap toll tags, 2026-09-15).
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%
© OpenStreetMap contributors · topo tiles © OpenTopoMap (CC-BY-SA) · vector tiles OpenFreeMap · aerial imagery USGS (public domain)
Profile
The 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).
Reported values vs. measurement
| Source | Claim | Evidence | Best-matching window |
|---|---|---|---|
| Mt. Equinox Uphill (race materials) | 12% | event_description | 100 m (-4.4 pp) |
Measurement card
| Elevation | USGS 3DEP (The National Map) — USGS 3DEP 1 m DEM, VT_Statewide_A23 (collected 2023) |
|---|---|
| Resolution / CRS | 1.0 m grid, EPSG:26918; sampled every 1.0 m, bilinear interpolation |
| Tiles | x65y478, x65y479 |
| Road centreline | /mnt/HC_Volume_106727764/site-corpus-fresh/us/mount-equinox-skyline-drive/mount-equinox-skyline-drive.geojson |
| Quality status | evidence quality A; no review flags; no caveated windows |
| Analysis | OCL 0.1.0, analysis 0.1.0, run canopy-all-260903, calculated 2026-09-03 |
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:26918",
"elevation_resolution_m": 1.0,
"elevation_tiles": [
"data/cache/usa/vt/USGS_1M_18_x65y478_VT_Statewide_A23.tif",
"data/cache/usa/vt/USGS_1M_18_x65y479_VT_Statewide_A23.tif"
],
"calculated_at": "2026-09-03T19:07:55+00:00",
"road_source": "/mnt/HC_Volume_106727764/site-corpus-fresh/us/mount-equinox-skyline-drive/mount-equinox-skyline-drive.geojson",
"run_id": "canopy-all-260903",
"elevation_provider": "USGS 3DEP (The National Map)",
"elevation_licence": "Public domain \u2014 USGS 3DEP 1 m DEM, courtesy of the U.S. Geological Survey",
"elevation_dataset": "USGS 3DEP 1 m DEM, VT_Statewide_A23 (collected 2023)",
"elevation_tile_ids": [
"x65y478",
"x65y479"
],
"climb_origin": "discovered",
"canopy_check": "unavailable \u2014 EPT corridor failed: VT_Statewide_2_A23: no EPT nodes intersect the corridor; VT_Statewide_1_A23: no EPT nodes intersect the corridor",
"license": "ODbL-1.0",
"license_url": "https://howsteep.org/licensing"
}