Bike crash statistics and hotspots in Portola Valley, CA
- bike crashes, 2021–2026
- 18
- bike crashes, 2021–2026
- serious or fatal
- 11
- serious or fatal
- fatal
- 0
- fatal
- street with the most
- Alpine Rd
- street with the most
Is Portola Valley safe to ride a bike?
This page covers traffic crashes, not crime. We don't rate cities as safe or unsafe: crash counts can't say how risky a street is, and busy streets have more crashes partly because more people use them. What the records show: 18 bike crashes were reported in Portola Valley from 2021–2026, 11 of them serious or fatal. The most were at Alpine Rd & Arastradero Rd (5). 11% were side-impact crashes at junctions (drivers pulling out or turning across).
Where to look next
How people on bikes get hit in Portola Valley
- 11% were side-impact crashes at junctions (drivers pulling out or turning across).
Where bike crashes cluster
Spots with 3 or more reported crashes within about 250 m, worst first.
- 015 crashes · 4 serious or fatal
Alpine Rd & Arastradero Rd
A mix of crash types
- No single crash pattern stands out here. Slow down, stay visible, and leave extra room.
- 024 crashes · 2 serious or fatal
Portola Rd & Westridge Dr
A mix of crash types
- No single crash pattern stands out here. Slow down, stay visible, and leave extra room.
- 033 crashes · 2 serious or fatal
Alpine Rd & Los Trancos Rd
A mix of crash types
- No single crash pattern stands out here. Slow down, stay visible, and leave extra room.
Bike crashes in Portola Valley by year
| Year | Crashes | Serious/fatal | |
|---|---|---|---|
| 2021 | 5 | 4 | |
| 2022 | 4 | 3 | |
| 2023 | 2 | 1 | |
| 2024 | 3 | 2 | |
| 2025 | 2 | 0 | |
| 2026 | 2 | 1 |
How people get to work in Portola Valley
| Share of workers | Portola Valley | California |
|---|---|---|
| Drive alone | 47.4% | 65.7% |
| Carpool | 0% | 9.5% |
| Public transit | 0% | 2.9% |
| Walk | 2.6% | 2.4% |
| Bicycle | 0.8% | 0.7% |
| Work from home | 49.1% | 17.2% |
4% of households in Portola Valley have no car (California: 7.1%). The average trip to work takes 19.3 minutes one way (California: 28.7).
US Census American Community Survey, 2020–2024 five-year estimates, 4,305 residents. These are trips to work only: walks to school, the shops or a bus stop aren't counted, so they can't say how much walking or riding happens on Portola Valley's streets.
Common questions about Portola Valley
- Where do the most bike crashes happen in Portola Valley?
- The worst spot is Alpine Rd & Arastradero Rd, with 5 reported bike crashes from 2021–2026, 4 of them serious or fatal. Next are Portola Rd & Westridge Dr (4) and Alpine Rd & Los Trancos Rd (3).
- How many cyclists were killed in Portola Valley?
- No deaths were reported in 18 reported bike crashes in Portola Valley from 2021–2026, and 11 left someone seriously hurt or killed.
- How do cyclists usually get hit in Portola Valley?
- 11% were side-impact crashes at junctions (drivers pulling out or turning across).
- How many people bike to work in Portola Valley?
- 0.8% of workers in Portola Valley ride a bicycle to work (California: 0.7%), and 0% take public transit. 4% of households have no car (California: 7.1%). From the Census American Community Survey, 2020–2024.
- How many bike crashes happen in Portola Valley each year?
- Reported bike crashes with map locations: 2021: 5, 2022: 4, 2023: 2, 2024: 3, 2025: 2, 2026: 2. The latest year can rise as late reports come in.
- Where does this data come from?
- Police crash reports in the California Crash Reporting System (CCRS), published by the state on data.ca.gov. Only crashes reported with map coordinates are counted, so the real totals are higher.
Places to ride to near Portola Valley
Bike climbs near Portola Valley
Nearby cities
Source: California Crash Reporting System (CCRS), 2021–2026. A report with no coordinates is placed at the intersection its street names give; reports with neither are not counted, so these numbers are lower than the real total. Busy streets show more crashes partly because more people use them. Data last rebuilt 2026-10-07. How the data works.