How far is Monte Rio, CA from San Diego, CA?

The driving distance from Monte Rio, CA to San Diego, CA is about 572.5 miles (921.4 km), with a travel time of about 09h 46m by car.

The straight-line flight distance is about 515.2 miles (829.1 km).
For a round trip, plan for roughly 19h 32m of driving time before adding stops, traffic, or weather delays.
A comfortable departure window is usually 6:00 AM to 7:30 AM PDT.

Trip Tools

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.

Reverse Route

Quick Snapshot

Road

572.56 mi

09h 46m

Flight

515.15 mi

829.06 km direct

This drive is better planned with a longer stop or an overnight stay.

Flight Distance

Direct air line

515.15 mi

Kilometers

829.06 km

Flight Time

01h 02m

Driving Distance

Road route

572.56 mi

Kilometers

921.44 km

Drive Time

09h 46m

Gas Cost Calculator

$/gallon

MPG

Miles

Leave and Arrive Planner

Pick a departure time to see your estimated arrival and same-day return window.

Departure Time

Drive time stays fixed at 09h 46m.

Arrival Snapshot

Arrive in San Diego

Tue, May 5, 8:38 PM PDT

Return by in Monte Rio

Wed, May 6, 6:24 AM PDT

Useful when you're deciding between a quick errand, a day trip, or a longer stop.

Leave Monte Rio

2026-05-05T10:51

Arrive San Diego

Tue, May 5, 8:38 PM PDT

Route Timing

09h 46m

One way by road

Best Departure Window

6:00 AM to 7:30 AM PDT

Treat this as a longer travel day

Arrive between

3:46 PM to 5:16 PM PDT

Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.

Leave by

4:28 PM PDT

Keeps a same-day return open with about 08h 00m at the destination.

Back in Monte Rio

8:00 PM PDT

Overnight-style route

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.

Mid-route stop

Kettleman City

Census-designated place in Kings County, California

From Monte Rio

283.8 mi

04h 53m

To San Diego

288.8 mi

04h 53m

Route Weather Snapshot

Check the forecast at both ends before you head out.

Origin

Monte Rio Weather

Live fallback forecast

64°F

Tuesday

Using Occidental as the closest live forecast in the Sonoma County weather hub.

Mostly Sunny

Starts

Tue, May 5 6:00 AM PDT

Wind

6 to 10 mph W

Destination

San Diego Weather

67°F

Tuesday

Chance Rain Showers

Starts

Tue, May 5 6:00 AM PDT

Wind

5 to 15 mph W

Driving Route Map

The map below follows the saved road route between Monte Rio and San Diego.

Turn-by-Turn Driving Directions

Step-by-step road directions between Monte Rio and San Diego.

1

Start on River Boulevard

39 m · 10 sec · River Boulevard
2

Turn right onto Bohemian Highway

1110 ft · 32 sec · Bohemian Highway
3

Turn right onto D Street

73 m · 12 sec · D Street
4

Continue straight

4.2 mi · 6 min
5

Turn right onto Pocket Canyon Highway

7.1 mi · 11 min · Pocket Canyon Highway
6

Continue on Front Street

1725 ft · 29 sec · Front Street
7

Continue on Gravenstein Highway North

5.7 mi · 9 min · Gravenstein Highway North
8

Continue on Healdsburg Avenue

2865 ft · 50 sec · Healdsburg Avenue
9

Continue on North Main Street

1.3 km · 1 min · North Main Street
10

Continue on Gravenstein Highway

7.6 mi · 11 min · Gravenstein Highway
11

Take the ramp slight right toward US 101 South: San Francisco

1342 ft · 37 sec
12

Merge slight left onto Redwood Highway

29.6 mi · 35 min · Redwood Highway
13

Keep slight right to continue on John T. Knox Freeway

13.6 mi · 17 min · John T. Knox Freeway
14

Merge slight left onto Eastshore Freeway

3.8 mi · 5 min · Eastshore Freeway
15

Keep slight left to continue on Interstate Highway 80

1321 ft · 21 sec · Interstate Highway 80
16

Keep slight left to continue on MacArthur Freeway

16.4 mi · 19 min · MacArthur Freeway
17

Merge slight left onto Arthur H. Breed Junior Freeway

11.5 mi · 13 min · Arthur H. Breed Junior Freeway
18

Keep slight right to continue on Arthur H. Breed Junior Freeway

17.8 mi · 21 min · Arthur H. Breed Junior Freeway
19

Keep slight right to continue on William Elton Brown Freeway

11.1 mi · 12 min · William Elton Brown Freeway
20

Keep slight left to continue on William Elton Brown Freeway

5.9 mi · 6 min · William Elton Brown Freeway
21

Merge slight left onto Westside Freeway

224.4 mi · 4 hr · Westside Freeway
22

Keep slight right

58.4 mi · 1 hr 7 min
23

Keep slight left to continue on Golden State Freeway

4.1 mi · 5 min · Golden State Freeway
24

Keep slight right to continue on I 405 South

1354 ft · 18 sec
25

Keep slight left

24.7 mi · 29 min
26

Keep slight left to continue on Golden State Freeway

1.3 mi · 2 min · Golden State Freeway
27

Merge slight left onto Santa Ana Freeway

25.7 mi · 30 min · Santa Ana Freeway
28

Keep slight right to continue on Santa Ana Freeway

1241 ft · 16 sec · Santa Ana Freeway
29

Take the exit slight right toward Broadway, Main Street, Santa Ana

1.3 km · 57 sec
30

Keep slight left

788 ft · 10 sec
31

Keep slight left to continue on I 5 South

981 ft · 13 sec
32

Merge slight left onto Santa Ana Freeway

1.3 km · 54 sec · Santa Ana Freeway
33

Keep slight right to continue on Santa Ana Freeway

1.2 km · 52 sec · Santa Ana Freeway
34

Keep slight right to continue on Santa Ana Freeway

1.2 mi · 1 min · Santa Ana Freeway
35

Take the exit slight right toward Newport Avenue

1.2 km · 1 min
36

Turn right onto Newport Avenue

1943 ft · 44 sec · Newport Avenue
37

Turn left onto Walnut Avenue

2.2 mi · 4 min · Walnut Avenue
38

Turn left onto Jamboree Road

2595 ft · 38 sec · Jamboree Road
39

Take the exit slight right toward I 5 South

1479 ft · 21 sec
40

Merge slight left onto Santa Ana Freeway

5.5 mi · 6 min · Santa Ana Freeway
41

Keep slight left to continue on Santa Ana Freeway

1.3 km · 56 sec · Santa Ana Freeway
42

Merge slight right onto San Diego Freeway

76.5 mi · 1 hr 29 min · San Diego Freeway
43

Take the exit slight right toward Front Street, Civic Center, 2nd Avenue

1164 ft · 28 sec
44

Keep slight right to continue on Front Street, Civic Center

592 ft · 15 sec
45

Continue on Front Street

2662 ft · 2 min · Front Street
46

Arrive at your destination

0 m · 1 sec · Front Street

Car Route Details

A richer read on the saved driving route between Monte Rio and San Diego.

OSRM road route

Drive Character

Long-distance drive

This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.

Directions

46 steps

6 turns on the saved route

Ramps & Exits

8 merges, 5 ramps or exits

Navigation Density

8 / 100 mi

Decision points by distance

Main Roads

Westside Freeway

283 mi · 49%

San Diego Freeway

76.5 mi · 13%

Santa Ana Freeway

35 mi · 6%

Redwood Highway

29.6 mi · 5%

Arthur H. Breed Junior Freeway

29.3 mi · 5%

I 405 South

25 mi · 4%

Longest Stretch

Westside Freeway

Merge slight left onto Westside Freeway

224 mi · 04h 00m

Route Summary

A quick read on whether this route feels easy, ambitious, or worth planning around.

Trip Read

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.

Drive Time

09h 46m

Overnight route

Same-Day Return

19h 32m

Round-trip wheel time

Road vs Air

+57.3 mi

515.2 mi direct line

Halfway Stop

Kettleman City

04h 53m from Monte Rio

Leave By

4:28 PM PDT

Overnight-style route

Weather Watch

Mostly Sunny leaving Monte Rio and Chance Rain Showers near San Diego.

Trip Questions

Direct answers travelers usually want before committing to the drive.

How long does it take to drive from Monte Rio to San Diego?

The road trip is about 572.5 miles (921.4 km) and usually takes 09h 46m 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 283.8 miles from Monte Rio and 288.8 miles from San Diego.

How much longer is the road route than the straight-line distance?

The direct path is about 515.2 miles (829.1 km), while the road route adds roughly 57.3 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 $116.53 one way or $233.07 round trip. Estimated CO2 is about 179.5 kg one way.

What should you check before leaving?

Before you leave, expect Mostly Sunny around Monte Rio and Chance Rain Showers near San Diego.

Stop Ideas Near Kettleman City

Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.

Mid-route Guidance

Local place coverage is thin around Kettleman City, so nearby transit and meeting points are shown instead.

Reviewed stop coverage is still thin around this midpoint, so practical transit waypoints are shown on the right.

Transit and Meeting Points

Useful pickup, handoff, or rendezvous points close to Kettleman City.

BUS

Kettleman City, California

3 mi away

3300 Hubert Way

BUS

Lemoore, California

34 mi away

300 E Street

RAIL

Corcoran station

38 mi away

1099 Otis Ave.

BUS

Lemoore (Naval Air Station), California

41 mi away

25th Ave and Highway 198

Flight Path Map

This map shows the direct air route between Monte Rio and San Diego. Straight-line distance: 515.15 mi (829.06 km).

#1 Monte Rio

Census-designated place in Sonoma County, California

Population	1,152
Coordinates	38.4654700, -123.0088900
Altitude	13
Country	United States

#2 San Diego

The eighth most populous city in the United States and the center of the San Diego metropolitan area.

Population	1,422,420
Coordinates	32.7157100, -117.1647200
Altitude	20
Country	United States

Start: River Boulevard (-123.008749, 38.465395)
End: Front Street (-117.164717, 32.71571)

Estimated Travel Time

Distance: 921 km by road

Speed	Time
30 mph (48.3 km/h)	19h 04m
40 mph (64.37 km/h)	14h 18m
50 mph (80.47 km/h)	11h 27m
60 mph (96.56 km/h)	09h 32m
70 mph (112.65 km/h)	08h 10m
80 mph (129 km/h)	07h 08m

Fuel, Round Trip and CO2

Estimated fuel cost and emissions for this route.

One-way fuel

20.2 gal

76.48 L · about $116.53

Round trip

$233.07

40.4 gal · 152.96 L

Estimated CO2

179.5 kg one way

Round trip: 359 kg / 791 lb CO2, using regular gasoline.

Fuel	$/gal	One way	Round trip
Regular gas	$5.77	$116.53	$233.07
Mid-grade	$6.07	$122.53	$245.07
Premium	$6.24	$126.11	$252.22
Diesel	$7.57	$152.85	$305.71

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 05, 2026

There is no time difference between Monte Rio and San Diego. The current time is 10:51:40.

Distance to Other Cities

Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.

How did we calculate? Place names are translated into coordinates. The Haversine formula calculates straight-line distance; driving distance uses road network data.