San Antonio Valley Road Climb
- long (10.1 km)
- 6.3 mi
- long (10.1 km)
- of climbing (690 m)
- 2,264 ft
- of climbing (690 m)
- average grade
- 6.8%
- average grade
- steepest 500 m
- 9.9%
- steepest 500 m
Elevation profile
From 1,942 ft at the bottom to 4,206 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 San Antonio Valley Road this week
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Is it safe to bike up San Antonio Valley 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: 1 bike crash was reported on or beside San Antonio Valley Road along the climb from 2021–2025, 1 of them serious or fatal.
Common questions about San Antonio Valley Road
- How long and steep is the San Antonio Valley Road climb?
- 6.3 miles (10.1 km) at 6.8% on average, climbing 2,264 ft (690 m) from 1,942 ft to 4,206 ft. The steepest half kilometre averages 9.9%. That makes it a Category 1 climb.
- Where does the climb start and finish?
- It starts at 37.3577, -121.57039, and tops out at Copernicus Peak at 37.34573, -121.63097.
- Is San Antonio Valley 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.
Other climbs nearby
- Mines RoadCat 3 · 2.9 mi at 4% · 610 ft · starts 5.0 mi away
- Kincaid Road near San JoseCat 3 · 2.1 mi at 6.8% · 774 ft · starts 5.6 mi away
- Kincaid Road near San JoseCat 3 · 2.1 mi at 6.4% · 722 ft · starts 5.6 mi away
- Mount Hamilton Road from Manzanita TrailCat 2 · 7.1 mi at 5.5% · 2,051 ft · starts 5.9 mi away
- Mount Hamilton Road near San JoseCat 3 · 3.1 mi at 4.6% · 758 ft · starts 8.2 mi away
- Quimby Road from Mount Hamilton RoadCat 3 · 1.1 mi at 8.9% · 535 ft · starts 8.4 mi away
- Higuera Highland LaneCat 3 · 1.2 mi at 13.4% · 860 ft · starts 11 mi away
- Higuera RoadCat 3 · 1.7 mi at 6.7% · 614 ft · starts 11 mi away
Places to ride to nearby
Found from OpenStreetMap roads and USGS 3DEP elevation; ranked on shape only. Category 1: 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.