Sidewinder Road Climb

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.

How long and steep is the Sidewinder Road climb?

1.8 miles (2.9 km) at 11.5% on average, climbing 1,102 ft (336 m) from 804 ft to 1,906 ft. The steepest half kilometre averages 18.5%. That makes it a Category 2 climb.

Where does the climb start and finish?

It starts at 41.57287, -123.53502, and tops out on the road at 41.56013, -123.53799.

Is Sidewinder 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.

• Ten Bear Road from Ti Bar RoadCat 2 · 4.2 mi at 5.8% · 1,293 ft · starts 2.6 mi away
• Ti Bar RoadCat 2 · 3.7 mi at 7.5% · 1,473 ft · starts 3.2 mi away
• Ten Bear Road from Lookout RoadCat 2 · 3.7 mi at 6.6% · 1,302 ft · starts 4.6 mi away
• Sandy Bar RoadCat 2 · 3.2 mi at 6.7% · 1,132 ft · starts 5.4 mi away
• Gasquet-Orleans RoadCat 3 · 1.0 mi at 10.5% · 551 ft · starts 7.0 mi away
• Gasquet-Orleans RoadCat 2 · 2.8 mi at 11.1% · 1,631 ft · starts 7.3 mi away
• Gasquet-Orleans RoadCat 2 · 6.2 mi at 4% · 1,322 ft · starts 7.3 mi away
• Independence Creek RoadCat 2 · 4.7 mi at 8.2% · 2,044 ft · starts 7.5 mi away