How far is South Williamsport, PA from Erie, PA?
The driving distance from South Williamsport, PA to Erie, PA is about 257.9 miles (415 km), with a travel time of about 04h 00m by car.
- The straight-line flight distance is about 170.9 miles (275 km).
- For a round trip, plan for roughly 08h 00m 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 00m.
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.
Partly Sunny
Showers And Thunderstorms Likely
Driving Route Map
The map below follows the saved road route between South Williamsport and Erie.
Turn-by-Turn Driving Directions
Step-by-step road directions between South Williamsport and Erie.
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1
Start on West Southern Avenue
1.3 km · 2 min · West Southern Avenue
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2
Keep slight right to continue on Riverside Drive
1695 ft · 37 sec · Riverside Drive
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3
Turn right onto South Maynard Street
1748 ft · 53 sec · South Maynard Street
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4
Take the ramp left
1352 ft · 34 sec
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5
Merge slight left onto Susquehanna Beltway
2384 ft · 37 sec · Susquehanna Beltway
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6
Keep slight left to continue on Susquehanna Beltway
12.1 mi · 17 min · Susquehanna Beltway
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7
Continue on Appalachian Thruway
15.9 mi · 18 min · Appalachian Thruway
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8
Take the exit slight right toward PA 477: Salona
1434 ft · 51 sec
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9
Turn right onto Long Run Road
134 m · 11 sec · Long Run Road
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10
At the end of the road, turn left onto Nittany Valley Drive
4.4 mi · 7 min · Nittany Valley Drive
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11
Take the ramp slight right
2208 ft · 54 sec
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12
Merge slight left onto Keystone Shortway
152.7 mi · 2 hr 44 min · Keystone Shortway
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13
Take the exit slight right toward I 79 North: Erie
1 km · 1 min
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14
Merge slight right
65.8 mi · 1 hr 11 min
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15
Take the exit slight right toward PA 5 East, PA 290 East: 12th Street
1388 ft · 50 sec
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16
Turn right onto West 12th Street
2.3 mi · 5 min · West 12th Street
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17
Turn left onto State Street
2318 ft · 2 min · State Street
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18
Arrive at your destination
0 m · 1 sec · State Street
Car Route Details
A richer read on the saved driving route between South Williamsport and Erie.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
Keystone Shortway
Merge slight left onto Keystone Shortway
153 mi · 02h 44m
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.
Partly Sunny leaving South Williamsport and Showers And Thunderstorms Likely near Erie.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from South Williamsport to Erie?
The road trip is about 257.9 miles (415 km) and usually takes 04h 00m 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?
Brookville is a useful midpoint, sitting about 128.6 miles from South Williamsport and 129.2 miles from Erie.
How much longer is the road route than the straight-line distance?
The direct path is about 170.9 miles (275 km), while the road route adds roughly 87 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 9:00 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $37.18 one way or $74.37 round trip. Estimated CO2 is about 80.9 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around South Williamsport and Showers And Thunderstorms Likely near Erie.
Stop Ideas Near Brookville
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 Brookville.
Tyrone
Altoona Transportation Center
Johnstown
Latrobe station
Flight Path Map
This map shows the direct air route between South Williamsport and Erie. Straight-line distance: 170.87 mi (274.99 km).
#1 South Williamsport
Borough in Lycoming County, Pennsylvania
| Population | 6,064 |
| Coordinates | 41.2320200, -76.9991300 |
| Altitude | 159 |
| Country | United States |
#2 Erie
The second most populous city in Pennsylvania.
| Population | 95,077 |
| Coordinates | 42.1292200, -80.0850600 |
| Altitude | 199 |
| Country | United States |
End: State Street (-80.085094, 42.129207)
Estimated Travel Time
Distance: 415 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 08h 35m |
| 40 mph (64.37 km/h) | 06h 26m |
| 50 mph (80.47 km/h) | 05h 09m |
| 60 mph (96.56 km/h) | 04h 17m |
| 70 mph (112.65 km/h) | 03h 41m |
| 80 mph (129 km/h) | 03h 13m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $37.18 | $74.37 |
| Mid-grade | $4.60 | $41.85 | $83.70 |
| Premium | $4.95 | $45.08 | $90.16 |
| Diesel | $5.98 | $54.42 | $108.84 |
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 · Apr 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.