Mosquito Ridge Road Climb near Truckee

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 Mosquito Ridge Road near Truckee climb?

1.8 miles (2.8 km) at 6.8% on average, climbing 636 ft (194 m) from 5,000 ft to 5,636 ft. The steepest half kilometre averages 9.4%. That makes it a Category 3 climb.

Where does the climb start and finish?

It starts at 39.12235, -120.49284, and tops out on the road at 39.11676, -120.48359.

Is Mosquito Ridge 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.

• Mosquito Ridge Road near TruckeeCat 3 · 3.9 mi at 4.8% · 1,001 ft · starts 0.0 mi away
• Hell Hole RoadCat 3 · 3.8 mi at 4% · 810 ft · starts 5.3 mi away
• French Meadows RoadCat 3 · 2.6 mi at 6.1% · 843 ft · starts 5.5 mi away
• Hell Hole Road near TruckeeCat 3 · 2.2 mi at 6.9% · 797 ft · starts 6.0 mi away
• Foresthill Divide RoadCat 2 · 6.8 mi at 4% · 1,457 ft · starts 7.7 mi away
• Last Chance RoadCat 2 · 6.7 mi at 4.9% · 1,713 ft · starts 8.1 mi away
• Ramsey Crossing RoadCat 3 · 1.6 mi at 9% · 755 ft · starts 9.2 mi away
• Eleven Pines RoadCat 2 · 5.5 mi at 5.3% · 1,549 ft · starts 11 mi away