How far is Williamstown, PA from Erie, PA?
The driving distance from Williamstown, PA to Erie, PA is about 172.7 miles (277.9 km), with a travel time of about 02h 54m by car.
- The straight-line flight distance is about 148.6 miles (239.1 km).
- For a round trip, plan for roughly 05h 48m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM EDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 02h 54m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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.
Rain Showers Likely
Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Williamstown and Erie.
Turn-by-Turn Driving Directions
Step-by-step road directions between Williamstown and Erie.
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1
Start on Taylor Avenue
83 m · 12 sec · Taylor Avenue
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2
Continue on 1st Avenue
852 ft · 45 sec · 1st Avenue
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3
At the end of the road, turn left onto Main Street
1.9 mi · 4 min · Main Street
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4
At the end of the road, turn left onto Front Street
1.7 mi · 2 min · Front Street
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5
Continue on Water Street
2511 ft · 42 sec · Water Street
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6
Turn straight onto Front Street
1.2 mi · 2 min · Front Street
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7
Continue on Low Hill Road
3 mi · 5 min · Low Hill Road
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8
Turn left
1.5 km · 2 min
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9
Merge slight left onto Mon/Fayette Expressway
18.6 mi · 20 min · Mon/Fayette Expressway
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10
Take the exit slight right toward West Elizabeth, Finleyville
2190 ft · 59 sec
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11
Turn left onto Finleyville Elrama Road
2502 ft · 51 sec · Finleyville Elrama Road
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12
Turn right onto McChain Road
21 m · 2 sec · McChain Road
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13
Keep slight left to continue on McChain Road
1.7 mi · 4 min · McChain Road
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14
Turn straight onto Brownsville Road Extension
3.9 mi · 8 min · Brownsville Road Extension
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15
At the end of the road, turn left onto Brownsville Road
2853 ft · 1 min · Brownsville Road
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16
Turn left onto Brownsville Road
2.1 mi · 4 min · Brownsville Road
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17
Continue on Provost Road
1.3 mi · 3 min · Provost Road
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18
Continue on Provost Road
62 m · 8 sec · Provost Road
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19
Turn left onto Saw Mill Run Boulevard
1607 ft · 48 sec · Saw Mill Run Boulevard
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20
Continue on Saw Mill Run Boulevard
2.3 mi · 5 min · Saw Mill Run Boulevard
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21
Take the exit slight right
569 ft · 15 sec
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22
Continue straight
110 m · 13 sec
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23
Turn right onto Liberty Tunnels
1.2 mi · 2 min · Liberty Tunnels
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24
Continue on Liberty Bridge
2835 ft · 60 sec · Liberty Bridge
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25
Take the exit straight toward I 579 North
1101 ft · 27 sec
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26
Continue on Crosstown Boulevard
2264 ft · 48 sec · Crosstown Boulevard
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27
Continue on Veterans Bridge
1.1 mi · 2 min · Veterans Bridge
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28
Continue on Parkway North
11.6 mi · 16 min · Parkway North
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29
Merge slight left
111.2 mi · 2 hr 1 min
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30
Take the exit slight right toward PA 5 East, PA 290 East: 12th Street
1388 ft · 50 sec
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31
Turn right onto West 12th Street
2.3 mi · 5 min · West 12th Street
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32
Turn left onto State Street
2318 ft · 2 min · State Street
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33
Arrive at your destination
0 m · 1 sec · State Street
Car Route Details
A richer read on the saved driving route between Williamstown and Erie.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Parkway North
Merge slight left
111 mi · 02h 01m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Rain Showers Likely leaving Williamstown and Chance Rain Showers near Erie.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Williamstown to Erie?
The road trip is about 172.7 miles (277.9 km) and usually takes 02h 54m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Portersville is a useful midpoint, sitting about 85.3 miles from Williamstown and 87.4 miles from Erie.
How much longer is the road route than the straight-line distance?
The direct path is about 148.6 miles (239.1 km), while the road route adds roughly 24.1 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 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 12:42 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $24.88 one way or $49.77 round trip. Estimated CO2 is about 54.1 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers Likely around Williamstown and Chance Rain Showers near Erie.
Stop Ideas Near Portersville
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 Portersville.
Union Station
Alliance
Greensburg
Latrobe station
Flight Path Map
This map shows the direct air route between Williamstown and Erie. Straight-line distance: 148.57 mi (239.1 km).
#1 Williamstown
Borough in northeastern Dauphin County, Pennsylvania, United States
| Population | 1,386 |
| Coordinates | 39.9792400, -80.0408900 |
| Altitude | 256 |
| 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: 278 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 45m |
| 40 mph (64.37 km/h) | 04h 19m |
| 50 mph (80.47 km/h) | 03h 27m |
| 60 mph (96.56 km/h) | 02h 52m |
| 70 mph (112.65 km/h) | 02h 28m |
| 80 mph (129 km/h) | 02h 09m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $24.88 | $49.77 |
| Mid-grade | $4.60 | $28.01 | $56.02 |
| Premium | $4.95 | $30.17 | $60.34 |
| Diesel | $5.98 | $36.42 | $72.84 |
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.