Corral Bottom Road Climb from Hyampom Mountain Road
- long (8.0 km)
- 4.9 mi
- long (8.0 km)
- of climbing (427 m)
- 1,401 ft
- of climbing (427 m)
- average grade
- 5.4%
- average grade
- steepest 500 m
- 7.7%
- steepest 500 m
Elevation profile
From 2,684 ft at the bottom to 4,085 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 Corral Bottom Road this week
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Is it safe to bike up Corral Bottom 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 Corral Bottom Road
- How long and steep is the Corral Bottom Road from Hyampom Mountain Road climb?
- 4.9 miles (8.0 km) at 5.4% on average, climbing 1,401 ft (427 m) from 2,684 ft to 4,085 ft. The steepest half kilometre averages 7.7%. That makes it a Category 2 climb.
- Where does the climb start and finish?
- It starts at 40.69779, -123.36678, where Corral Bottom Road leaves Hyampom Mountain Road, and tops out at Underwood Mountain Road at 40.72109, -123.4108.
- Is Corral Bottom 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
- Corral Bottom RoadCat 3 · 5.0 mi at 3.2% · 850 ft · starts 0.1 mi away
- Underwood Mountain RoadCat 3 · 6.2 mi at 3.2% · 1,037 ft · starts 2.6 mi away
- Packers Creek Road from Corral Creek RoadCat 3 · 3.6 mi at 4.8% · 922 ft · starts 4.3 mi away
- Pattison Peak Jeep RoadHC · dirt · 5.6 mi at 11.7% · 3,445 ft · starts 4.9 mi away
- Fir Root Springs RoadCat 2 · 3.1 mi at 7.7% · 1,273 ft · starts 5.8 mi away
- Bear Creek Ridge Jeep RoadCat 1 · dirt · 3.3 mi at 14% · 2,428 ft · starts 6.4 mi away
- Big French Creek RoadHC · dirt · 11 mi at 5.7% · 3,202 ft · starts 6.5 mi away
- Big Mountain RoadHC · dirt · 11 mi at 5.1% · 2,838 ft · starts 6.6 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.