Old California State Route 299 Climb from Chezum Road near Blue Lake
- long (8.3 km)
- 5.2 mi
- long (8.3 km)
- of climbing (480 m)
- 1,575 ft
- of climbing (480 m)
- average grade
- 5.8%
- average grade
- steepest 500 m
- 7.8%
- steepest 500 m
Elevation profile
From 860 ft at the bottom to 2,434 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 Old California State Route 299 this week
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Is it safe to bike up Old California State Route 299?
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 Old California State Route 299
- How long and steep is the Old California State Route 299 from Chezum Road near Blue Lake climb?
- 5.2 miles (8.3 km) at 5.8% on average, climbing 1,575 ft (480 m) from 860 ft to 2,434 ft. The steepest half kilometre averages 7.8%. That makes it a Category 2 climb.
- Where does the climb start and finish?
- It starts at 40.91176, -123.81284, where Old California State Route 299 leaves Chezum Road, and tops out on the road at 40.90181, -123.78413.
- Is Old California State Route 299 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
- Old California State Route 299 from Chezum Road near Blue LakeCat 3 · 1.6 mi at 7.1% · 587 ft · starts 0.0 mi away
- Trinity Highway near Blue LakeCat 2 · 6.4 mi at 5.4% · 1,827 ft · starts 0.6 mi away
- Trinity Highway near Blue LakeCat 2 · 4.4 mi at 5.5% · 1,296 ft · starts 0.7 mi away
- Saber Tooth Road near Blue LakeCat 3 · 1.5 mi at 11.5% · 892 ft · starts 0.7 mi away
- Old Three Creeks RoadCat 2 · 4.4 mi at 6.3% · 1,490 ft · starts 1.4 mi away
- Acorn LaneCat 3 · 1.6 mi at 10.8% · 886 ft · starts 1.4 mi away
- Saber Tooth Road near Blue LakeCat 3 · 1.3 mi at 9.5% · 669 ft · starts 1.9 mi away
- Titlow Hill RoadCat 2 · 4.4 mi at 8.2% · 1,886 ft · starts 2.6 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.