Lilley Mountain Drive Climb from Road 400
- long (3.6 km)
- 2.2 mi
- long (3.6 km)
- of climbing (314 m)
- 1,030 ft
- of climbing (314 m)
- average grade
- 8.7%
- average grade
- steepest 500 m
- 13%
- steepest 500 m
Elevation profile
From 889 ft at the bottom to 1,919 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 Lilley Mountain Drive this week
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Is it safe to bike up Lilley Mountain Drive?
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: no bike crashes were reported along the climb from 2021–2025.
Common questions about Lilley Mountain Drive
- How long and steep is the Lilley Mountain Drive from Road 400 climb?
- 2.2 miles (3.6 km) at 8.7% on average, climbing 1,030 ft (314 m) from 889 ft to 1,919 ft. The steepest half kilometre averages 13%. That makes it a Category 3 climb.
- Where does the climb start and finish?
- It starts at 37.18035, -119.83063, where Lilley Mountain Drive leaves Road 400, and tops out at Lilley Mountain at 37.1819, -119.7957.
- Is Lilley Mountain Drive 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
- John Muir DriveCat 3 · 1.3 mi at 9.1% · 610 ft · starts 3.1 mi away
- Lilley Mountain Drive near MaderaCat 3 · 2.3 mi at 6.4% · 768 ft · starts 3.3 mi away
- Trabuco RoadCat 3 · 1.9 mi at 8.1% · 823 ft · starts 6.8 mi away
- Skyline Ridge RoadCat 3 · 1.5 mi at 7% · 548 ft · starts 7.9 mi away
- Southern Yosemite Highway near ClovisCat 3 · 3.7 mi at 3.5% · 686 ft · starts 8.3 mi away
- Melvin RoadCat 3 · 2.8 mi at 5.1% · 758 ft · starts 9.6 mi away
- Veater Ranch Road from Veater Ranch Road-Road 8079Cat 2 · 4.3 mi at 6.8% · 1,529 ft · starts 10 mi away
- Potter Ridge Fire RoadCat 2 · 6.4 mi at 5.2% · 1,762 ft · starts 12 mi away
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.