Bia 241 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 Bia 241 climb?

0.8 miles (1.3 km) at 14.3% on average, climbing 597 ft (182 m) from 1,040 ft to 1,637 ft. The steepest half kilometre averages 16.1%. That makes it a Category 3 climb.

Where does the climb start and finish?

It starts at 36.0245, -118.8038, where Bia 241 leaves BIA Road 70, and tops out on the road at 36.03401, -118.80624.

Is Bia 241 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.

• Chimney RoadCat 3 · 2.1 mi at 8% · 883 ft · starts 1.4 mi away
• Pothole RoadHC · dirt · 11 mi at 4.6% · 2,799 ft · starts 3.5 mi away
• Wiggletail RoadCat 3 · 2.1 mi at 6.7% · 755 ft · starts 5.6 mi away
• Highway 190HC · 31 mi at 4% · 6,535 ft · starts 6.4 mi away
• MagestaHC · dirt · 7.8 mi at 7% · 2,890 ft · starts 6.6 mi away
• Balch Park RoadHC · 24 mi at 4.1% · 5,272 ft · starts 8.1 mi away
• M-56 near PortervilleCat 2 · 4.4 mi at 5.8% · 1,335 ft · starts 10 mi away
• Bear Creek Road from Balch Park RoadHC · 15 mi at 6.4% · 4,954 ft · starts 11 mi away