Perinoli Road Climb
- long (4.0 km)
- 2.5 mi
- long (4.0 km)
- of climbing (214 m)
- 702 ft
- of climbing (214 m)
- average grade
- 5.3%
- average grade
- steepest 500 m
- 11.5%
- steepest 500 m
Elevation profile
From 105 ft at the bottom to 807 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 Perinoli Road this week
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Is it safe to bike up Perinoli 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. What the records show: no bike crashes were reported along the climb from 2021–2025.
Common questions about Perinoli Road
- How long and steep is the Perinoli Road climb?
- 2.5 miles (4.0 km) at 5.3% on average, climbing 702 ft (214 m) from 105 ft to 807 ft. The steepest half kilometre averages 11.5%. That makes it a Category 3 climb.
- Where does the climb start and finish?
- It starts at 38.59219, -122.84639, where Perinoli Road leaves Los Amigos Road, and tops out at Mc Near Road at 38.59767, -122.80818.
- Is Perinoli Road paved?
- Mostly: OpenStreetMap tags 87% of the climb as paved, and the rest as dirt or gravel.
- 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
- Toyon DriveCat 3 · 1.1 mi at 12.1% · 712 ft · starts 1.8 mi away
- Brookside Ranch RoadCat 2 · 2.8 mi at 8% · 1,194 ft · starts 5.1 mi away
- Sweetwater Springs Road near WindsorCat 3 · 3.7 mi at 5.1% · 1,007 ft · starts 5.2 mi away
- Chemise RoadCat 2 · 5.3 mi at 4.5% · 1,260 ft · starts 5.9 mi away
- Pine Flat Road near HealdsburgHC · 11 mi at 5% · 2,940 ft · starts 6.2 mi away
- Mill Creek Road near HealdsburgCat 3 · 4.3 mi at 3.5% · 781 ft · starts 6.3 mi away
- Mount Jackson Resort RoadCat 2 · 4.4 mi at 6.5% · 1,516 ft · starts 6.4 mi away
- Geysers Road near HealdsburgCat 2 · 6.8 mi at 5.8% · 2,093 ft · starts 6.6 mi away
Places to ride to nearby
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.