How far is Erie, PA from South Union, PA?
The driving distance from Erie, PA to South Union, PA is about 239.9 miles (386.1 km), with a travel time of about 04h 53m by car.
- The straight-line flight distance is about 163.5 miles (263.1 km).
- For a round trip, plan for roughly 09h 46m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM EDT.
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 04h 53m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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.
Borough of Pennsylvania
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 Erie and South Union.
Turn-by-Turn Driving Directions
Step-by-step road directions between Erie and South Union.
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1
Start on State Street
703 ft · 35 sec · State Street
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2
Turn left onto East 8th Street
1.1 mi · 3 min · East 8th Street
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3
Turn right onto East Bayfront Parkway
1664 ft · 45 sec · East Bayfront Parkway
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4
Continue on Bayfront Connector
4.4 mi · 8 min · Bayfront Connector
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5
Continue on Station Road
1 mi · 2 min · Station Road
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6
Take the exit slight right
1313 ft · 32 sec
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7
Merge slight left onto AMVETS Memorial Highway
4.1 mi · 5 min · AMVETS Memorial Highway
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8
Take the exit slight right toward I 86 East: Jamestown
2858 ft · 37 sec
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9
Continue on Hopkins-Bowser Highway
7 mi · 8 min · Hopkins-Bowser Highway
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10
Continue on Southern Tier Expressway
168 mi · 3 hr 15 min · Southern Tier Expressway
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11
Take the exit slight right toward I 99 South, US 15 South, NY 417: Williamsport, Gang Mills
1178 ft · 20 sec
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12
Keep slight left to continue on I 99 South, US 15 South: Williamsport
44.2 mi · 49 min
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13
Take the exit slight right toward Sebring
2405 ft · 1 min
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14
Turn left onto Bloss Mountain Road
1110 ft · 17 sec · Bloss Mountain Road
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15
Continue on Old Route 15
1.4 mi · 2 min · Old Route 15
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16
Turn slight left onto Old Mill Road
1985 ft · 1 min · Old Mill Road
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17
Turn straight
3.8 mi · 7 min
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18
Turn right onto Salt Spring Road
1.5 mi · 6 min · Salt Spring Road
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19
Turn left onto Beck Road
1.5 km · 4 min · Beck Road
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20
Turn left onto South Union Road
25 m · 4 sec · South Union Road
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21
Arrive at your destination
0 m · 1 sec · South Union Road
Car Route Details
A richer read on the saved driving route between Erie and South Union.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Southern Tier Expressway
Continue on Southern Tier Expressway
168 mi · 03h 15m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Sunny leaving Erie and Sunny near South Union.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Erie to South Union?
The road trip is about 239.9 miles (386.1 km) and usually takes 04h 53m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Shinglehouse is a useful midpoint, sitting about 119.8 miles from Erie and 120.1 miles from South Union.
How much longer is the road route than the straight-line distance?
The direct path is about 163.5 miles (263.1 km), while the road route adds roughly 76.4 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 8:00 AM EDT. If you want a more comfortable same-day return, try to leave by 7:14 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $34.57 one way or $69.14 round trip. Estimated CO2 is about 75.2 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Erie and Sunny near South Union.
Stop Ideas Near Shinglehouse
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 Shinglehouse.
Jamestown, New York
Fredonia, New York
Dunkirk, New York
Buffalo–Depew station
Flight Path Map
This map shows the direct air route between Erie and South Union. Straight-line distance: 163.5 mi (263.12 km).
#1 Erie
The second most populous city in Pennsylvania.
| Population | 95,077 |
| Coordinates | 42.1292200, -80.0850600 |
| Altitude | 199 |
| Country | United States |
#2 South Union
Township in Fayette County, Pennsylvania
| Population | 10,106 |
| Coordinates | 41.5681300, -76.9988600 |
| Altitude | 552 |
| Country | United States |
End: South Union (-76.99886, 41.56813)
Estimated Travel Time
Distance: 386 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 59m |
| 40 mph (64.37 km/h) | 05h 59m |
| 50 mph (80.47 km/h) | 04h 47m |
| 60 mph (96.56 km/h) | 03h 59m |
| 70 mph (112.65 km/h) | 03h 25m |
| 80 mph (129 km/h) | 02h 59m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $34.57 | $69.14 |
| Mid-grade | $4.60 | $38.91 | $77.82 |
| Premium | $4.95 | $41.91 | $83.82 |
| Diesel | $5.98 | $50.59 | $101.18 |
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 Pennsylvania · May 31, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.