Trip from Union City, CA to San Diego, CA

Drive Time

8h 3m

Distance

494.1 mi

Route Type

Turn-heavy local drive

Overnight route

Trip Overview

The drive from Union City, CA to San Diego, CA covers 494.1 miles and takes about 8h 3m behind the wheel. It usually feels better as a 2-day road trip than as one long push.

The route leans on Union City Boulevard, Hesperian Boulevard, I 880 for much of the mileage, and the overall profile is turn-heavy local drive. At current regular gas prices, budget about $67.11 one way before food or hotel costs.

Trip Pace

Best split across 2 days

Treat the return leg as its own travel day rather than an afterthought.

Break Rhythm

2 planned breaks

Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.

Midpoint

247.1 miles from Union City, CA

A natural place for your longest stop of the day.

Drive Character

Expect a 8h 3m drive with frequent turns across 494.1 miles of local and secondary roads.

This route has more turning and local-road decision points than a simple highway run.

There are about 42 navigation steps in the underlying route data, so the final approach matters more than the middle miles.

Union City Boulevard is one of the defining roads on this drive.

Main Roads

Road	Distance	Duration
Union City Boulevard	0 mi	0m
Hesperian Boulevard	0 mi	0m
I 880	0 mi	0m
I 880 North	0 mi	0m
CA 92 East	0 mi	0m
Jackson Street	0 mi	0m
West Jackson Street	0 mi	0m
Foothill Boulevard	0 mi	0m

Longest stretch: Union City Boulevard — 0 mi, about 0m

Step-by-Step Directions

1

Start on Cambridge Way

2

Turn left onto Union City Boulevard

3

Continue on Hesperian Boulevard

4

Take the ramp slight right toward CA 92 East, I 880: Hayward

5

Keep slight left to continue on I 880 North, CA 92 East: Oakland, Downtown Hayward

6

Keep slight right to continue on CA 92 East: Downtown Hayward

7

Merge slight left onto Jackson Street

8

Continue on West Jackson Street

9

Continue on Foothill Boulevard

10

Turn right onto A Street

11

Continue on Redwood Road

12

Take the ramp right toward I 580 East: Stockton

13

Merge slight left onto Arthur H. Breed Junior Freeway

14

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

15

Keep slight right to continue on William Elton Brown Freeway

16

Keep slight left to continue on William Elton Brown Freeway

17

Merge slight left onto Westside Freeway

18

Keep slight right

19

Keep slight left to continue on Golden State Freeway

20

Keep slight right to continue on I 405 South

21

Keep slight left

22

Keep slight left to continue on Golden State Freeway

23

Merge slight left onto Santa Ana Freeway

24

Keep slight right to continue on Santa Ana Freeway

25

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

26

Keep slight left

27

Keep slight left to continue on I 5 South

28

Merge slight left onto Santa Ana Freeway

29

Keep slight right to continue on Santa Ana Freeway

30

Keep slight right to continue on Santa Ana Freeway

31

Take the exit slight right toward Newport Avenue

32

Turn right onto Newport Avenue

33

Turn left onto Walnut Avenue

34

Turn left onto Jamboree Road

35

Take the exit slight right toward I 5 South

36

Merge slight left onto Santa Ana Freeway

37

Keep slight left to continue on Santa Ana Freeway

38

Merge slight right onto San Diego Freeway

39

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

40

Keep slight right to continue on Front Street, Civic Center

41

Continue on Front Street

42

Arrive at your destination

When to Leave

Morning Departure

Start early — leave by 6-7 AM to arrive at a reasonable hour.

Evening Departure

This is a long drive — plan for a morning departure or consider splitting it into two days.

This drive is better paced as a 2-day trip.

Plan roughly 2 meaningful breaks for fuel, food, and rest.

The halfway point lands around 247.1 miles from Union City, CA.

Consider an overnight stop or starting very early.

Drive Plan

Departure

Before you leave

Start with fuel, water, and navigation already sorted so the first hour feels easy.

First stop

Around 109 miles

Use this first pause for coffee, a restroom break, and a quick traffic check ahead.

Halfway reset

Around 247.1 miles

This is the best place for your longest stop, a real meal, and a full fuel check.

Overnight split

Day 1 wrap after about 247 miles

Stop before fatigue turns the last few hours into a grind. You want day two to start fresh, not just resumed.

Final approach

Last hour of driving

Traffic, exits, and arrival timing usually matter more near San Diego, CA than in the middle of the route.

Before You Leave

+

Open the route before leaving Union City, CA so your first major turns are already loaded.

+

Leave with enough water and a charging cable within reach, not packed away.

+

Check your fuel range against the first long segment, especially if you are starting outside city service areas.

+

Pick one backup stop option before the midpoint in case traffic changes your pacing.

+

Treat this as a 2-day road trip and book the overnight stop before the busiest arrival window.

Trip Strategy

Day 1

Settle into the route from Union City, CA

Aim for roughly 247 miles and 4 hours of wheel time on this day.

Day 2

Finish the approach into San Diego, CA

Aim for roughly 247 miles and 4 hours of wheel time on this day.

Your first comfortable stop window is around 109 miles from Union City, CA.

This route usually feels better as a 2-day drive than as one long push.

Plan about 2 real breaks rather than only quick fuel stops.

Best Stop Towns on This Route

These towns line up with the pace of this drive and give you clearer places to stop with a purpose.

Late stop town

Overnight candidate

Santa Clarita, CA

247 mi into the route

Best for: Hotel check-in, dinner, and a fresh start

This lines up well with a realistic day-end stop if you are breaking the drive into stages.

Suggested Overnight Stops

Night 1

Santa Clarita, CA

247 mi · about 4h in

A practical overnight split lands near Santa Clarita, CA after about 247 miles or 4 hours of driving.

Travel Advice

Arrival Notes

The final approach into San Diego, CA usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.

Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around San Diego, CA.

On a multi-day trip, keep the last day a little lighter so you reach San Diego, CA with some flexibility left in the schedule.

Seasonal Notes

Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.

Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.

Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.

For long drives, weather on day two can matter just as much as conditions at departure, so check the whole travel window rather than only the first day.

Stops Along the Way

Halfway Point

Midpoint

About 247.1 mi from Union City, CA

Turlock, CA

Fuel and coffee

A short stop after about 109 miles helps settle the day before fatigue starts building.

Santa Clarita, CA

Meal break

The midpoint is around 247.1 miles from Union City, CA, which is a good place for a longer meal and fuel stop.

Overnight split

Hotel stop

For a steadier pace, wrap day one after about 247 miles or 4 hours on the road.

These stop ideas are pacing suggestions for the drive, so the exact town or exit can change with traffic, hotel plans, and fuel range.

Fuel & Cost

Fuel Type	$/gal	One Way	Round Trip
regular	$3.45	$67.11	$134.22
midgrade	$3.85	$74.89	$149.79
premium	$4.15	$80.73	$161.46
diesel	$3.75	$72.95	$145.90

Based on 25.4 MPG average. Estimated CO2 emission: 172.9 kg one way.

Frequently Asked Questions

The drive from Union City, CA to San Diego, CA covers 494.1 miles and takes about 8h 3m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.

The main roads are Union City Boulevard, Hesperian Boulevard, I 880. Expect a mix of highway and local road driving.

Consider an overnight stop or starting very early.

Yes. This route is usually more comfortable as a 2-day drive. A sensible stopping point is after roughly 247 miles on day one.

The midpoint is about 247.1 miles from Union City, CA. Look for rest areas, gas stations, or food options near the halfway mark.

At current regular gas prices, expect to spend about $67.11 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.

Start early — leave by 6-7 AM to arrive at a reasonable hour. This is a long drive — plan for a morning departure or consider splitting it into two days.

Plan about 2 meaningful breaks for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.