Terral Road Climb
- long (2.8 km)
- 1.8 mi
- long (2.8 km)
- of climbing (383 m)
- 1,257 ft
- of climbing (383 m)
- average grade
- 13.5%
- average grade
- steepest 500 m
- 15.4%
- steepest 500 m
Elevation profile
From 2,753 ft at the bottom to 4,009 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 Terral Road this week
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Is it safe to bike up Terral 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: no bike crashes were reported along the climb from 2021–2025.
Common questions about Terral Road
- How long and steep is the Terral Road climb?
- 1.8 miles (2.8 km) at 13.5% on average, climbing 1,257 ft (383 m) from 2,753 ft to 4,009 ft. The steepest half kilometre averages 15.4%. That makes it a Category 2 climb.
- Where does the climb start and finish?
- It starts at 40.31997, -123.37478, where Terral Road leaves Mad River Road, and tops out on the road at 40.33046, -123.36873.
- Is Terral 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
- White Mountain Road from Mad River RoadCat 3 · 1.0 mi at 13.3% · 673 ft · starts 0.7 mi away
- Ruth Zenia Road from Hetten Creek RoadCat 2 · 3.3 mi at 6.8% · 1,175 ft · starts 1.2 mi away
- Clover Gulch RoadCat 3 · 1.7 mi at 10.3% · 925 ft · starts 2.5 mi away
- Lakeview Drive from Mad River RoadCat 3 · 0.8 mi at 13% · 538 ft · starts 3.6 mi away
- Dashields Creek RoadCat 1 · dirt · 4.9 mi at 9.2% · 2,365 ft · starts 3.8 mi away
- Ruth Zenia Road from Van Duzen RoadCat 3 · 4.0 mi at 3.7% · 781 ft · starts 3.8 mi away
- Grizzly Mountain RoadCat 1 · dirt · 6.1 mi at 7.1% · 2,270 ft · starts 4.6 mi away
- Moores RoadHC · dirt · 8.2 mi at 6.9% · 2,992 ft · starts 4.6 mi away
Found from OpenStreetMap roads and USGS 3DEP elevation; ranked on shape only. Category 2: 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.