How far is Riverside, CA from Foster City, CA?
The driving distance from Riverside, CA to Foster City, CA is about 422.8 miles (680.5 km), with a travel time of about 07h 59m by car.
- The straight-line flight distance is about 369.7 miles (595 km).
- For a round trip, plan for roughly 15h 59m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM PDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
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 07h 59m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
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.
Census-designated place in Kings 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 Riverside and Foster City.
Turn-by-Turn Driving Directions
Step-by-step road directions between Riverside and Foster City.
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1
Start on the route
55 m · 14 sec
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2
Turn right
29 m · 7 sec
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3
Turn right onto Magnolia Avenue
70 m · 15 sec · Magnolia Avenue
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4
Turn left onto Central Avenue
3.5 mi · 6 min · Central Avenue
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5
Turn right onto Van Buren Boulevard
6.1 mi · 8 min · Van Buren Boulevard
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6
Continue on Mission Boulevard
1434 ft · 24 sec · Mission Boulevard
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7
Take the ramp slight left toward CA 60 West
1617 ft · 41 sec
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8
Merge slight left onto Pomona Freeway
12.1 mi · 14 min · Pomona Freeway
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9
Take the exit slight right toward CA 71 South, CA 71 North: Corona, Pomona
1213 ft · 30 sec
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10
Keep slight right to continue on CA 71 North: Pomona
2510 ft · 1 min
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11
Keep slight left
811 ft · 20 sec
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12
Merge slight left onto Chino Valley Freeway
3.5 mi · 4 min · Chino Valley Freeway
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13
Keep slight left to continue on CA 57 North
1.2 km · 2 min
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14
Continue straight
3.4 mi · 4 min
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15
Keep slight left to continue on I 210 West: Pasadena
1.1 mi · 2 min
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16
Merge slight left onto Foothill Freeway
18.3 mi · 21 min · Foothill Freeway
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17
Keep slight right to continue on Foothill Freeway
25.6 mi · 30 min · Foothill Freeway
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18
Keep slight right
686 ft · 9 sec
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19
Merge slight right
1.6 km · 1 min
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20
Keep slight left
36.1 mi · 42 min
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21
Keep slight left to continue on Golden State Freeway
22.3 mi · 25 min · Golden State Freeway
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22
Keep slight right to continue on Westside Freeway
225.6 mi · 4 hr 2 min · Westside Freeway
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23
Keep slight left to continue on William Elton Brown Freeway
15.9 mi · 17 min · William Elton Brown Freeway
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24
Keep slight right to continue on William Elton Brown Freeway
1.1 mi · 1 min · William Elton Brown Freeway
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25
Merge slight left onto Arthur H. Breed Junior Freeway
18 mi · 21 min · Arthur H. Breed Junior Freeway
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26
Keep slight right to continue on Arthur H. Breed Junior Freeway
10.4 mi · 12 min · Arthur H. Breed Junior Freeway
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27
Take the exit slight right toward Redwood Road
1149 ft · 30 sec
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28
Turn left onto Redwood Road
3104 ft · 1 min · Redwood Road
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29
Continue on A Street
1.5 km · 2 min · A Street
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30
Turn left onto Mission Boulevard
1735 ft · 44 sec · Mission Boulevard
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31
Turn slight right onto Jackson Street
5.5 mi · 8 min · Jackson Street
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32
Keep slight left
528 ft · 7 sec
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33
Keep slight right
7.8 mi · 9 min
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34
Take the exit slight right toward Foster City Boulevard, East Hillsdale Boulevard, Third Avenue
1013 ft · 26 sec
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35
Keep slight right to continue on Foster City Boulevard, East Hillsdale Boulevard, Third Avenue
124 m · 5 sec
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36
Turn straight onto Chess Drive
38 m · 2 sec · Chess Drive
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37
Turn right onto Foster City Boulevard
2520 ft · 56 sec · Foster City Boulevard
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38
Turn right onto Civic Center Drive
63 m · 9 sec · Civic Center Drive
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39
Enter the roundabout and take exit 1 toward Civic Center Drive
26 m · 5 sec · Civic Center Drive
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40
Exit the roundabout onto Civic Center Drive
888 ft · 41 sec · Civic Center Drive
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41
At the end of the road, turn right onto Shell Boulevard
95 m · 6 sec · Shell Boulevard
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42
Arrive at your destination
0 m · 1 sec · Shell Boulevard
Car Route Details
A richer read on the saved driving route between Riverside and Foster City.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Westside Freeway
Keep slight right to continue on Westside Freeway
226 mi · 04h 02m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Sunny leaving Riverside and Sunny near Foster City.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Riverside to Foster City?
The road trip is about 422.8 miles (680.5 km) and usually takes 07h 59m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Kettleman City is a useful midpoint, sitting about 211.5 miles from Riverside and 211.5 miles from Foster City.
How much longer is the road route than the straight-line distance?
The direct path is about 369.7 miles (595 km), while the road route adds roughly 53.1 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 6:00 AM to 7:30 AM PDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $86.07 one way or $172.15 round trip. Estimated CO2 is about 132.6 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Riverside and Sunny near Foster City.
Stop Ideas Near Kettleman 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 Kettleman City.
Kettleman City, California
Lemoore, California
Corcoran station
Lemoore (Naval Air Station), California
Flight Path Map
This map shows the direct air route between Riverside and Foster City. Straight-line distance: 369.71 mi (594.99 km).
#1 Riverside
The most populous city in Riverside County, California and the center of the Riverside metropolitan area.
| Population | 330,786 |
| Coordinates | 33.9533500, -117.3961600 |
| Altitude | 252 |
| Country | United States |
#2 Foster City
City in San Mateo County, California, United States
| Population | 33,901 |
| Coordinates | 37.5585500, -122.2710800 |
| Altitude | 2 |
| Country | United States |
End: Foster City (-122.27108, 37.55855)
Estimated Travel Time
Distance: 681 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 14h 05m |
| 40 mph (64.37 km/h) | 10h 34m |
| 50 mph (80.47 km/h) | 08h 27m |
| 60 mph (96.56 km/h) | 07h 02m |
| 70 mph (112.65 km/h) | 06h 02m |
| 80 mph (129 km/h) | 05h 16m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $86.07 | $172.15 |
| Mid-grade | $6.07 | $90.50 | $181.01 |
| Premium | $6.24 | $93.15 | $186.29 |
| Diesel | $7.57 | $112.90 | $225.80 |
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 · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.