Harding Truck Trail Climb
- long (14.8 km)
- 9.2 mi
- long (14.8 km)
- of climbing (942 m)
- 3,091 ft
- of climbing (942 m)
- average grade
- 6.4%
- average grade
- steepest 500 m
- 10.7%
- steepest 500 m
Elevation profile
From 1,401 ft at the bottom to 4,491 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 Harding Truck Trail this week
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Is it safe to bike up Harding Truck Trail?
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. Most of this climb is a dirt road, and falls away from public roads rarely reach police reports. What the records show: no bike crashes were reported along the climb from 2021–2025.
Common questions about Harding Truck Trail
- How long and steep is the Harding Truck Trail climb?
- 9.2 miles (14.8 km) at 6.4% on average, climbing 3,091 ft (942 m) from 1,401 ft to 4,491 ft. The steepest half kilometre averages 10.7%. That makes it a Hors catégorie climb.
- Where does the climb start and finish?
- It starts at 33.71051, -117.61846, where Harding Truck Trail leaves Modjeska Canyon Road, and ends at a gate at 33.72897, -117.54804.
- Is Harding Truck Trail paved?
- Mostly not: OpenStreetMap tags 100% of the climb as dirt or gravel. Dirt roads can be closed in fire season or after rain, so check with the land manager.
- 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
- El Toro Road from Saddleback Church RoadCat 3 · 3.6 mi at 3.2% · 604 ft · starts 3.7 mi away
- Maple Springs RoadHC · 13 mi at 5.1% · 3,530 ft · starts 4.1 mi away
- Bedford RoadHC · dirt · 6.1 mi at 8.6% · 2,756 ft · starts 9.0 mi away
- Indian Truck TrailCat 1 · dirt · 7.0 mi at 6.8% · 2,530 ft · starts 9.4 mi away
- Cajalco RoadCat 3 · 4.5 mi at 3% · 702 ft · starts 10 mi away
- Fullerton AvenueCat 3 · 2.8 mi at 3.8% · 568 ft · starts 11 mi away
- Rimpau AvenueCat 3 · 3.7 mi at 3.1% · 600 ft · starts 12 mi away
- Long Canyon Road near Lake ElsinoreCat 3 · 3.3 mi at 5.8% · 1,010 ft · starts 12 mi away
Places to ride to nearby
Bike crash hotspots nearby
Found from OpenStreetMap roads and USGS 3DEP elevation; ranked on shape only. Hors catégorie: 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.