Lake Mountain Road Climb from Tom Walker Road
- long (23.3 km)
- 14 mi
- long (23.3 km)
- of climbing (1,352 m)
- 4,436 ft
- of climbing (1,352 m)
- average grade
- 5.8%
- average grade
- steepest 500 m
- 12.4%
- steepest 500 m
Elevation profile
From 2,418 ft at the bottom to 6,854 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 Mountain Road this week
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Is it safe to bike up Lake Mountain 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. Most of this climb is a dirt road, and falls away from public roads rarely reach police reports. What the records show: no bike crashes were reported along the climb from 2021–2025.
Common questions about Lake Mountain Road
- How long and steep is the Lake Mountain Road from Tom Walker Road climb?
- 14 miles (23.3 km) at 5.8% on average, climbing 4,436 ft (1,352 m) from 2,418 ft to 6,854 ft. The steepest half kilometre averages 12.4%. That makes it a Hors catégorie climb.
- Where does the climb start and finish?
- It starts at 41.79682, -123.16478, where Lake Mountain Road leaves Tom Walker Road, and tops out at Lake Mountain at 41.74892, -123.13361.
- Is Lake Mountain Road paved?
- Mostly not: OpenStreetMap tags 100% of the climb as dirt or gravel. Dirt roads can be closed in fire season or after rain, so check with the land manager.
- 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
- Tom Walker Road from Walker Creek RoadHC · dirt · 14 mi at 6.2% · 4,603 ft · starts 2.7 mi away
- Seiad Creek RoadHC · dirt · 14 mi at 4.6% · 3,415 ft · starts 3.6 mi away
- East Tompkins RoadHC · dirt · 7.9 mi at 8.1% · 3,386 ft · starts 6.4 mi away
- China Creek Road from China Grade RoadCat 1 · dirt · 6.7 mi at 6.1% · 2,149 ft · starts 7.2 mi away
- Dogget Middle Road from Bar RoadHC · dirt · 9.6 mi at 6.4% · 3,241 ft · starts 7.5 mi away
- Thompson Creek RoadCat 3 · 2.4 mi at 6.5% · 814 ft · starts 8.6 mi away
- Tom Walker Road from Scott River RoadHC · dirt · 11 mi at 5.7% · 3,353 ft · starts 8.6 mi away
- Thompson Ridge RoadHC · 18 mi at 4.4% · 4,098 ft · starts 8.8 mi away
Found from OpenStreetMap roads and USGS 3DEP elevation; ranked on shape only. Hors catégorie: 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.