Lake County Highway Climb
- long (12.1 km)
- 7.5 mi
- long (12.1 km)
- of climbing (578 m)
- 1,896 ft
- of climbing (578 m)
- average grade
- 4.8%
- average grade
- steepest 500 m
- 7.6%
- steepest 500 m
Elevation profile
From 381 ft at the bottom to 2,277 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 Lake County Highway this week
Loading forecast…
Is it safe to bike up Lake County Highway?
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. What the records show: 1 bike crash was reported on or beside Lake County Highway along the climb from 2021–2025.
Common questions about Lake County Highway
- How long and steep is the Lake County Highway climb?
- 7.5 miles (12.1 km) at 4.8% on average, climbing 1,896 ft (578 m) from 381 ft to 2,277 ft. The steepest half kilometre averages 7.6%. That makes it a Category 2 climb.
- Where does the climb start and finish?
- It starts at 38.58847, -122.57717, where Lake County Highway leaves Lincoln Avenue, and tops out on the road at 38.65196, -122.5998.
- Is Lake County Highway 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
- Kortum Canyon RoadCat 3 · 2.2 mi at 7.2% · 827 ft · starts 0.9 mi away
- Petrified Forest RoadCat 3 · 2.0 mi at 7.2% · 764 ft · starts 1.2 mi away
- Old Lawley Toll RoadCat 2 · 3.1 mi at 6.5% · 1,073 ft · starts 1.5 mi away
- Diamond Mountain Road from Saint Helena HighwayCat 2 · 3.3 mi at 8.2% · 1,444 ft · starts 1.7 mi away
- Fechter RoadCat 3 · 1.1 mi at 11.5% · 636 ft · starts 3.4 mi away
- Yellow Jacket Ranch Road near CalistogaCat 3 · 1.3 mi at 7.9% · 531 ft · starts 4.5 mi away
- Mount Saint Helena TrailCat 1 · dirt · 5.4 mi at 7.4% · 2,129 ft · starts 4.7 mi away
- Mattei RoadCat 3 · 1.1 mi at 9.8% · 564 ft · starts 5.1 mi away
Found from OpenStreetMap roads and USGS 3DEP elevation; ranked on shape only. Category 2: 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.