How far is Alum Rock, CA from San Francisco, CA?
The driving distance from Alum Rock, CA to San Francisco, CA is about 52.4 miles (84.3 km), with a travel time of about 01h 00m by car.
- The straight-line flight distance is about 43 miles (69.2 km).
- For a round trip, plan for roughly 02h 00m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM PDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 01h 00m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
A city in San Mateo County, California.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Alum Rock and San Francisco.
Turn-by-Turn Driving Directions
Step-by-step road directions between Alum Rock and San Francisco.
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1
Start on Alum Rock Avenue
108 m · 35 sec · Alum Rock Avenue
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2
Continue on Alum Rock Avenue
2.2 mi · 4 min · Alum Rock Avenue
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3
Take the ramp right toward US 101 North: San Francisco
1408 ft · 36 sec
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4
Keep slight left to continue on US 101 North
995 ft · 24 sec
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5
Merge slight left onto Bayshore Freeway
11.7 mi · 13 min · Bayshore Freeway
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6
Keep slight left
35.8 mi · 43 min
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7
Continue on Octavia Boulevard
2490 ft · 42 sec · Octavia Boulevard
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8
Turn right onto Market Street
629 ft · 32 sec · Market Street
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9
Keep slight right to continue on Market Street
961 ft · 35 sec · Market Street
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10
Arrive at your destination
0 m · 1 sec · Market Street
Car Route Details
A richer read on the saved driving route between Alum Rock and San Francisco.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Bayshore Freeway
Keep slight left
35.8 mi · 00h 43m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Sunny leaving Alum Rock and Sunny near San Francisco.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Alum Rock to San Francisco?
The road trip is about 52.4 miles (84.3 km) and usually takes 01h 00m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Redwood City is a useful midpoint, sitting about 25.5 miles from Alum Rock and 27 miles from San Francisco.
How much longer is the road route than the straight-line distance?
The direct path is about 43 miles (69.2 km), while the road route adds roughly 9.4 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 8:00 AM to 10:00 AM PDT. If you want a more comfortable same-day return, try to leave by 4:30 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $10.67 one way or $21.35 round trip. Estimated CO2 is about 16.4 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Alum Rock and Sunny near San Francisco.
Stop Ideas Near Redwood City
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Redwood City.
Fremont station
Hayward station
Fremont (San Joaquin Buses), California
Santa Clara – Great America station
Flight Path Map
This map shows the direct air route between Alum Rock and San Francisco. Straight-line distance: 43.01 mi (69.22 km).
#1 Alum Rock
Census-designated place in Santa Clara County, California
| Population | 15,536 |
| Coordinates | 37.3660500, -121.8271800 |
| Altitude | 46 |
| Country | United States |
#2 San Francisco
The seventeenth most populous city in the United States and the center of the San Francisco Bay Area.
| Population | 866,606 |
| Coordinates | 37.7749300, -122.4194200 |
| Altitude | 16 |
| Country | United States |
End: Market Street (-122.419433, 37.774953)
Estimated Travel Time
Distance: 84 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 44m |
| 40 mph (64.37 km/h) | 01h 18m |
| 50 mph (80.47 km/h) | 01h 02m |
| 60 mph (96.56 km/h) | 00h 52m |
| 70 mph (112.65 km/h) | 00h 44m |
| 80 mph (129 km/h) | 00h 39m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $10.67 | $21.35 |
| Mid-grade | $6.07 | $11.22 | $22.44 |
| Premium | $6.24 | $11.55 | $23.10 |
| Diesel | $7.57 | $14.00 | $28.00 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in California · Jun 01, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.