Hidden Springs Road Climb
- long (1.7 km)
- 1.1 mi
- long (1.7 km)
- of climbing (208 m)
- 682 ft
- of climbing (208 m)
- average grade
- 12.3%
- average grade
- steepest 500 m
- 18%
- steepest 500 m
Elevation profile
From 230 ft at the bottom to 912 ft at the top. Grades are averaged over each half kilometre, from USGS elevation data, so short ramps can be steeper than they show.
Weather at the top of Hidden Springs Road this week
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Is it safe to bike up Hidden Springs Road?
We don't rate roads as safe or unsafe: crash counts can't say how risky a ride is, and roads people like to ride draw more riders, so they see more crashes. The records here are also incomplete: most reports along it are filed under Napa, where only 57% of reported bike crashes have a map location, so the numbers here are too low. What the records show: no bike crashes were reported along the climb from 2021–2025.
Common questions about Hidden Springs Road
- How long and steep is the Hidden Springs Road climb?
- 1.1 miles (1.7 km) at 12.3% on average, climbing 682 ft (208 m) from 230 ft to 912 ft. The steepest half kilometre averages 18%. That makes it a Category 3 climb.
- Where does the climb start and finish?
- It starts at 38.33342, -122.13356, where Hidden Springs Road leaves Wooden Valley Cross Road, and ends where the road ends at 38.34079, -122.14312.
- Is Hidden Springs Road paved?
- Yes, by its OpenStreetMap tags.
- How is the category worked out?
- From the climb's shape only: length in metres × average grade (%) of 16,000 or more for Cat 3, 32,000 for Cat 2, 64,000 for Cat 1 and 80,000 for HC. It describes how hard the climb is, not traffic or crashes.
- Where does this data come from?
- The climb is found from OpenStreetMap roads and USGS 3DEP elevation (every climb, not a list of famous ones). Access is from OpenStreetMap tags; gates and closures change, so obey posted signs. Crash counts are police reports in the California Crash Reporting System (CCRS) on data.ca.gov, counted where their map location is within 100 ft of the climb. The forecast is from the National Weather Service.
Other climbs nearby
- Grandview DriveCat 3 · 1.3 mi at 10.5% · 732 ft · starts 0.7 mi away
- Twin Sisters RoadCat 3 · 2.0 mi at 8.8% · 942 ft · starts 2.4 mi away
- Monticello Road from Wooden Valley RoadCat 3 · 2.0 mi at 5.1% · 538 ft · starts 4.8 mi away
- Green Valley Road from Wild Horse Valley RoadCat 3 · 2.0 mi at 7.1% · 755 ft · starts 5.8 mi away
- Wild Horse Valley RoadCat 2 · 2.8 mi at 8.7% · 1,283 ft · starts 6.2 mi away
- Gates Canyon RoadCat 1 · 6.9 mi at 6.7% · 2,454 ft · starts 6.6 mi away
- Mix Canyon RoadCat 1 · 4.6 mi at 9.2% · 2,244 ft · starts 7.0 mi away
- Atlas Peak RoadCat 2 · 9.9 mi at 3.9% · 2,060 ft · starts 7.1 mi away
Bike crash hotspots nearby
Found from OpenStreetMap roads and USGS 3DEP elevation; ranked on shape only. Category 3: length in metres × average grade (%) of 16,000 or more for Cat 3, 32,000 for Cat 2, 64,000 for Cat 1 and 80,000 for HC. It describes how hard the climb is, not traffic or crashes. Crashes: bike crashes reported within 100 ft of the climb, 2021–2025, from the California Crash Reporting System (CCRS), counted only where the report has map coordinates. Weather: National Weather Service. Access from OpenStreetMap tags; obey posted signs. How the data works.