Driving Time from Castro Valley to San Ramon
Driving from Castro Valley to San Ramon is about 12 mi and takes roughly 28 min. See the fuel-cost estimate, distance and route tips.
Castro Valley and San Ramon are about 8 mi (13 km) apart in a straight line. By road that works out to roughly 12 mi (19 km), a drive of about 28 min. A nonstop flight covers the great-circle distance in approximately 31 min.
| Straight-line distance | 8 mi / 13 km |
| Road distance (est.) | 12 mi / 19 km |
| Driving time (est.) | 28 min |
| Nonstop flight (est.) | 31 min |
| Driving fuel (est., 1-way) | $1 |
| Typical flight fare | $80–$250 |
| Geographic midpoint | 37.737, -122.032 |
How these estimates work
Straight-line distance uses the haversine formula on each city's coordinates. Road distance applies a circuity factor (~1.2–1.4×) and driving time a blended average speed. Flight time uses typical jet cruise speed plus ~30 minutes for taxi, climb and descent. Treat all figures as planning estimates.
Frequently asked questions
Castro Valley to San Ramon is about 8 mi (13 km) in a straight line, and roughly 12 mi (19 km) by road.