Cat 3 climb · Paved

Harvest Drive Climb

Tops out at Stumpfield Mountain.
long (1.9 km)
1.2 mi
long (1.9 km)
of climbing (179 m)
587 ft
of climbing (179 m)
average grade
9.6%
average grade
steepest 500 m
12.4%
steepest 500 m

Elevation profile

2,7303,3170
Grade per 500 m:under 3%3–5%5–7%7–9%9–12%12% and up

From 2,730 ft at the bottom to 3,317 ft at the top. Grades are averaged over each half kilometre, from USGS elevation data, so short ramps can be steeper than they show.

Map of the Harvest Drive climb
S: bottom, E: top. Map © Mapbox © OpenStreetMap.

Weather at the top of Harvest Drive this week

Weather

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Is it safe to bike up Harvest Drive?

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 Harvest Drive

How long and steep is the Harvest Drive climb?
1.2 miles (1.9 km) at 9.6% on average, climbing 587 ft (179 m) from 2,730 ft to 3,317 ft. The steepest half kilometre averages 12.4%. That makes it a Category 3 climb.
Where does the climb start and finish?
It starts at 37.44088, -119.81784, and tops out at Stumpfield Mountain at 37.43944, -119.80415.
Is Harvest Drive 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

Found from OpenStreetMap roads and USGS 3DEP elevation; ranked on shape only. Category 3: 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.