How far is San Francisco, CA from Byron, CA?
The driving distance from San Francisco, CA to Byron, CA is about 59.7 miles (96 km), with a travel time of about 01h 16m by car.
- The straight-line flight distance is about 43.1 miles (69.4 km).
- For a round trip, plan for roughly 02h 33m 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 16m.
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.
The third most populous city in Contra Costa 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 San Francisco and Byron.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Francisco and Byron.
-
1
Start on Market Street
95 m · 8 sec · Market Street
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2
Turn right onto 11th Street
3173 ft · 2 min · 11th Street
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3
Turn left onto Bryant Street
1724 ft · 1 min · Bryant Street
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4
Take the ramp left toward I 80 East: Oakland
1538 ft · 26 sec
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5
Merge slight right onto Route 80
1.5 km · 1 min · Route 80
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6
Continue on Dwight D. Eisenhower Highway
5.8 mi · 9 min · Dwight D. Eisenhower Highway
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7
Take the exit slight right toward I 580 East: Downtown Oakland, Hayward-Stockton
1.6 km · 1 min
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8
Merge slight left onto MacArthur Freeway
3218 ft · 42 sec · MacArthur Freeway
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9
Take the exit slight right toward CA 24 East: Berkeley, Walnut Creek
1.4 km · 2 min
-
10
Keep slight left to continue on CA 24 East: Walnut Creek
1259 ft · 31 sec
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11
Merge slight left onto Grove Shafter Freeway
3.3 mi · 4 min · Grove Shafter Freeway
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12
Keep slight left to continue on Grove Shafter Freeway
874 ft · 13 sec · Grove Shafter Freeway
-
13
Continue on Caldecott Tunnel
9.8 mi · 11 min · Caldecott Tunnel
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14
Merge slight right onto Senator Daniel E Boatwright Highway
3.8 mi · 4 min · Senator Daniel E Boatwright Highway
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15
Keep slight right to continue on CA 242 North: Concord, Pittsburg
3.9 mi · 4 min
-
16
Merge slight left
15 mi · 17 min
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17
Keep slight left
8 mi · 9 min
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18
Continue on Vasco Road
3.4 mi · 4 min · Vasco Road
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19
Turn left onto Camino Diablo
1.6 mi · 4 min · Camino Diablo
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20
Turn right onto Byron Highway
48 m · 8 sec · Byron Highway
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21
Turn left
5 m · 1 sec
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22
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between San Francisco and Byron.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
CA 242 North
Merge slight left
15 mi · 00h 17m
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 San Francisco and Sunny near Byron.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Francisco to Byron?
The road trip is about 59.7 miles (96 km) and usually takes 01h 16m 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?
Concord is a useful midpoint, sitting about 29.8 miles from San Francisco and 29.9 miles from Byron.
How much longer is the road route than the straight-line distance?
The direct path is about 43.1 miles (69.4 km), while the road route adds roughly 16.6 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 3:56 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $13.21 one way or $26.42 round trip. Estimated CO2 is about 18.8 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around San Francisco and Sunny near Byron.
Stop Ideas Near Concord
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 Concord.
Martinez station
Antioch–Pittsburg
Marine World (Seasonal), Vallejo, California
Vallejo, California
Flight Path Map
This map shows the direct air route between San Francisco and Byron. Straight-line distance: 43.12 mi (69.4 km).
#1 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 |
#2 Byron
Situated in eastern Contra Costa County at an elevation of 33 feet, this unincorporated community sits in the western San Joaquin Valley near the Sacramento-San Joaquin River Delta.
| Population | 0 |
| Coordinates | 37.8671500, -121.6380100 |
| Altitude | 10 |
| Country | United States |
End: Byron (-121.63801, 37.86715)
Estimated Travel Time
Distance: 96 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 59m |
| 40 mph (64.37 km/h) | 01h 29m |
| 50 mph (80.47 km/h) | 01h 11m |
| 60 mph (96.56 km/h) | 00h 59m |
| 70 mph (112.65 km/h) | 00h 51m |
| 80 mph (129 km/h) | 00h 44m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $6.26 | $13.21 | $26.42 |
| Mid-grade | $6.50 | $13.71 | $27.43 |
| Premium | $6.69 | $14.11 | $28.23 |
| Diesel | $8.41 | $17.75 | $35.50 |
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 · Oct 15, 2026