Sneath Lane Trail 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 Sneath Lane Trail climb?

1.5 miles (2.5 km) at 7.2% on average, climbing 591 ft (180 m) from 614 ft to 1,204 ft. The steepest half kilometre averages 11%. That makes it a Category 3 climb.

Where does the climb start and finish?

It starts at 37.61721, -122.45258, and tops out at Portola Discovery Site of San Francisco Bay at 37.60573, -122.45831.

Is Sneath Lane Trail 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.

• Sharp Park RoadCat 3 · 2.1 mi at 5.5% · 597 ft · starts 2.0 mi away
• Sneath LaneCat 3 · 3.0 mi at 4.2% · 676 ft · starts 2.3 mi away
• Fassler AvenueCat 3 · 1.5 mi at 8.5% · 656 ft · starts 2.4 mi away
• Westborough BoulevardCat 3 · 2.0 mi at 5.8% · 607 ft · starts 2.7 mi away
• Crespi DriveCat 3 · 1.4 mi at 7.6% · 548 ft · starts 2.9 mi away
• Manor DriveCat 3 · 1.2 mi at 9.5% · 591 ft · starts 3.1 mi away
• Hickey BoulevardCat 3 · 1.7 mi at 5.9% · 541 ft · starts 3.4 mi away
• Hillcrest BoulevardCat 3 · 1.7 mi at 6.5% · 594 ft · starts 3.5 mi away