How far is San Diego, CA from Union City, PA?
The driving distance from San Diego, CA to Union City, PA is about 2522 miles (4058.7 km), with a travel time of about 44h 49m by car.
- The straight-line flight distance is about 2128 miles (3424.7 km).
- For a round trip, plan for roughly 89h 38m 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 44h 49m.
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.
City in Sedgwick County, Colorado, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Patchy Fog then Slight Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between San Diego and Union City.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Diego and Union City.
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1
Start on Front Street
8 m · 6 sec · Front Street
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2
Turn left onto West Broadway
3088 ft · 1 min · West Broadway
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3
Turn left onto 11th Avenue
1146 ft · 25 sec · 11th Avenue
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4
Continue on Cabrillo Parkway
2.4 mi · 3 min · Cabrillo Parkway
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5
Continue on Cabrillo Freeway
8.3 mi · 10 min · Cabrillo Freeway
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6
Keep slight left
2688 ft · 35 sec
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7
Continue on Semper Fi Highway
1.8 mi · 2 min · Semper Fi Highway
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8
Continue on Escondido Freeway
3.1 mi · 4 min · Escondido Freeway
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9
Continue on Tony Gwynn Memorial Freeway
4.6 mi · 5 min · Tony Gwynn Memorial Freeway
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10
Continue on Escondido Freeway
5.9 mi · 7 min · Escondido Freeway
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11
Keep slight left to continue on Escondido Freeway
6.9 mi · 8 min · Escondido Freeway
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12
Continue on Avocado Highway
21.9 mi · 23 min · Avocado Highway
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13
Continue on Escondido Freeway
6.3 mi · 7 min · Escondido Freeway
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14
Take the exit slight right toward I 215
1510 ft · 18 sec
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15
Continue on Escondido Freeway
34.5 mi · 40 min · Escondido Freeway
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16
Keep slight right to continue on I 215 North: San Bernardino, Barstow
2413 ft · 51 sec
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17
Merge slight left onto Riverside Freeway
5.4 mi · 6 min · Riverside Freeway
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18
Continue on San Bernardino Freeway
5.5 mi · 6 min · San Bernardino Freeway
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19
Continue on Barstow Freeway
8.9 mi · 10 min · Barstow Freeway
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20
Keep slight left
1141 ft · 14 sec
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21
Continue on Barstow and Mojave Freeway
6.8 mi · 7 min · Barstow and Mojave Freeway
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22
Continue on CHP Officer Larry L. Wetterling and San Bernardino County Sheriff's Lieutenant Alfred E. Stewart Memorial Highway
5.4 mi · 6 min · CHP Officer Larry L. Wetterling and San Bernardino County Sheriff's Lieutenant Alfred E. Stewart Memorial Highway
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23
Continue on Barstow and Mojave Freeway
45.6 mi · 49 min · Barstow and Mojave Freeway
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24
Keep slight left to continue on Barstow and Mojave Freeway
112 mi · 2 hr · Barstow and Mojave Freeway
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25
Continue on Las Vegas Freeway
123.8 mi · 2 hr 10 min · Las Vegas Freeway
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26
Continue on Veterans Memorial Highway
161.6 mi · 2 hr 41 min · Veterans Memorial Highway
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27
Take the exit slight right toward I 70 East: Richfield, Denver
2705 ft · 1 min
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28
Continue straight
501.3 mi · 8 hr 40 min
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29
Keep slight left to continue on Heartland Expressway
12.6 mi · 15 min · Heartland Expressway
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30
Keep slight right to continue on Heartland Expressway
174.7 mi · 2 hr 55 min · Heartland Expressway
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31
Merge slight left
474.5 mi · 8 hr 11 min
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32
Keep slight right to continue on I 35, I 80 East: Chicago, Minneapolis, Kansas City
14.4 mi · 17 min
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33
Keep slight left
152.3 mi · 2 hr 45 min
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34
Take the exit slight right toward I 280 East, US 6 East, US 61 South: Rock Island, Moline
13.2 mi · 16 min
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35
Continue straight
13.9 mi · 15 min
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36
Keep slight left
2239 ft · 27 sec
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37
Merge slight left
144.9 mi · 2 hr 40 min
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38
Keep slight left
23.6 mi · 32 min
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39
Take the exit slight right toward I 80 East, I 90
1.4 km · 2 min
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40
Keep slight right to continue on I 80 East, I 90 East: Ohio, Indiana Toll Road East
1438 ft · 49 sec
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41
Merge slight left onto Indiana Toll Road
135.9 mi · 2 hr 27 min · Indiana Toll Road
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42
Continue on Ohio Turnpike
141.9 mi · 2 hr 32 min · Ohio Turnpike
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43
Keep slight right to continue on Ohio Turnpike Connector
2.6 mi · 3 min · Ohio Turnpike Connector
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44
Continue on Northwest Freeway
25.6 mi · 31 min · Northwest Freeway
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45
Keep slight right
4.6 mi · 7 min
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46
Merge slight right onto Cleveland Memorial Shoreway
1.7 mi · 2 min · Cleveland Memorial Shoreway
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47
Continue on Lakeland Freeway
8.8 mi · 11 min · Lakeland Freeway
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48
Keep slight right to continue on Euclid Spur
3.8 mi · 5 min · Euclid Spur
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49
Continue on I 90
79.1 mi · 1 hr 28 min · I 90
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50
Take the exit slight right toward US 19: Waterford
1309 ft · 40 sec
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51
Turn right onto Peach Street
8.5 mi · 13 min · Peach Street
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52
Continue on High Street
1.3 km · 2 min · High Street
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53
Continue on Route 19
1279 ft · 31 sec · Route 19
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54
Enter the roundabout and take exit 2 toward PA-97
57 m · 2 sec · PA-97
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55
Exit the roundabout onto PA-97
6.9 mi · 8 min · PA-97
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56
Continue on Waterford Street
2610 ft · 55 sec · Waterford Street
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57
Turn straight onto Perry Street
946 ft · 25 sec · Perry Street
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58
Turn right onto North Main Street
855 ft · 23 sec · North Main Street
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59
Arrive at your destination
0 m · 1 sec · North Main Street
Car Route Details
A richer read on the saved driving route between San Diego and Union City.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
I 70 East
Continue straight
501 mi · 08h 41m
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.
Mostly Sunny leaving San Diego and Patchy Fog then Slight Chance Showers And Thunderstorms near Union City.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Diego to Union City?
The road trip is about 2522 miles (4058.7 km) and usually takes 44h 49m 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?
Julesburg is a useful midpoint, sitting about 1259.3 miles from San Diego and 1262.7 miles from Union City.
How much longer is the road route than the straight-line distance?
The direct path is about 2128 miles (3424.7 km), while the road route adds roughly 394 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 $513.38 one way or $1,026.77 round trip. Estimated CO2 is about 790.9 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 3 hour time difference between San Diego and Union City, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Mostly Sunny around San Diego and Patchy Fog then Slight Chance Showers And Thunderstorms near Union City.
Flight Path Map
This map shows the direct air route between San Diego and Union City. Straight-line distance: 2128 mi (3424.68 km).
#1 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 |
#2 Union City
Borough in Pennsylvania, United States
| Population | 3,097 |
| Coordinates | 41.8995000, -79.8453300 |
| Altitude | 385 |
| Country | United States |
End: Union City (-79.84533, 41.8995)
Estimated Travel Time
Distance: 4059 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 84h 01m |
| 40 mph (64.37 km/h) | 63h 03m |
| 50 mph (80.47 km/h) | 50h 26m |
| 60 mph (96.56 km/h) | 42h 02m |
| 70 mph (112.65 km/h) | 36h 01m |
| 80 mph (129 km/h) | 31h 27m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $513.38 | $1,026.77 |
| Mid-grade | $6.07 | $539.81 | $1,079.63 |
| Premium | $6.24 | $555.56 | $1,111.13 |
| Diesel | $7.57 | $673.39 | $1,346.77 |
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 · Jul 26, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.