How far is San Mateo, CA from Fremont, CA?
The driving distance from San Mateo, CA to Fremont, CA is about 25.5 miles (41.1 km), with a travel time of about 00h 34m by car.
- The straight-line flight distance is about 18.5 miles (29.7 km).
- For a round trip, plan for roughly 01h 09m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM PDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 00h 34m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
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 Placer County, California.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Patchy Fog then Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between San Mateo and Fremont.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Mateo and Fremont.
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1
Start on South El Camino Real
29 m · 7 sec · South El Camino Real
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2
Turn right onto East 3rd Avenue
2254 ft · 50 sec · East 3rd Avenue
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3
Turn right onto South Delaware Street
1.3 mi · 3 min · South Delaware Street
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4
Take the ramp sharp left toward CA 92 East: San Mateo–Hayward Bridge, Hayward
1042 ft · 16 sec
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5
Merge slight left onto J Arthur Younger Freeway
12.4 mi · 15 min · J Arthur Younger Freeway
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6
Take the exit slight right toward I 880: Oakland, San Jose, Hesperian Boulevard
1112 ft · 15 sec
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7
Keep slight left to continue on I 880: Oakland, San Jose
3241 ft · 43 sec
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8
Keep slight right to continue on I 880 South: San Jose
1683 ft · 24 sec
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9
Merge slight left onto Nimitz Freeway
1 mi · 1 min · Nimitz Freeway
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10
Keep slight left
2.4 mi · 3 min
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11
Keep slight left
5.6 mi · 6 min
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12
Take the exit slight right toward Mowry Avenue, Central Fremont
1404 ft · 36 sec
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13
Turn left
36 m · 3 sec
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14
Turn straight onto Mowry Avenue
643 ft · 11 sec · Mowry Avenue
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15
Continue on Mowry Avenue
1.5 mi · 3 min · Mowry Avenue
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16
Arrive at your destination
0 m · 1 sec · Mowry Avenue
Car Route Details
A richer read on the saved driving route between San Mateo and Fremont.
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.
J Arthur Younger Freeway
Merge slight left onto J Arthur Younger Freeway
12.4 mi · 00h 15m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Patchy Fog then Mostly Sunny leaving San Mateo and Mostly Sunny near Fremont.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Mateo to Fremont?
The road trip is about 25.5 miles (41.1 km) and usually takes 00h 34m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Union City is a useful midpoint, sitting about 13.2 miles from San Mateo and 12.4 miles from Fremont.
How much longer is the road route than the straight-line distance?
The direct path is about 18.5 miles (29.7 km), while the road route adds roughly 7 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 7:00 AM to 7:00 PM PDT. If you want a more comfortable same-day return, try to leave by 7:20 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $5.19 one way or $10.38 round trip. Estimated CO2 is about 8 kg one way.
What should you check before leaving?
Before you leave, expect Patchy Fog then Mostly Sunny around San Mateo and Mostly Sunny near Fremont.
Stop Ideas Near Union 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 Union City.
Fremont station
Hayward station
Fremont (San Joaquin Buses), California
Pleasanton, CA
Flight Path Map
This map shows the direct air route between San Mateo and Fremont. Straight-line distance: 18.49 mi (29.75 km).
#1 San Mateo
The second most populous city in San Mateo County, California.
| Population | 102,398 |
| Coordinates | 37.5629900, -122.3255300 |
| Altitude | 13 |
| Country | United States |
#2 Fremont
The fifth most populous city in California.
| Population | 234,569 |
| Coordinates | 37.5482700, -121.9885700 |
| Altitude | 17 |
| Country | United States |
End: Mowry Avenue (-121.988548, 37.548259)
Estimated Travel Time
Distance: 41 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 51m |
| 40 mph (64.37 km/h) | 00h 38m |
| 50 mph (80.47 km/h) | 00h 30m |
| 60 mph (96.56 km/h) | 00h 25m |
| 70 mph (112.65 km/h) | 00h 21m |
| 80 mph (129 km/h) | 00h 19m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $5.19 | $10.38 |
| Mid-grade | $6.07 | $5.46 | $10.92 |
| Premium | $6.24 | $5.62 | $11.24 |
| Diesel | $7.57 | $6.81 | $13.62 |
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 · May 02, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.