How far is Williamstown, PA from Erie, PA?
The driving distance from Williamstown, PA to Erie, PA is about 309.1 miles (497.4 km), with a travel time of about 05h 12m by car.
- The straight-line flight distance is about 209.2 miles (336.7 km).
- For a round trip, plan for roughly 10h 24m 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 05h 12m.
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.
Census designated place
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Cloudy
Mostly Sunny
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 East Market Street
112 m · 21 sec · East Market Street
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2
Turn left onto South West Street
108 m · 16 sec · South West Street
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3
Turn right onto Station Street
111 m · 20 sec · Station Street
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4
Turn left onto South Water Street
1200 ft · 54 sec · South Water Street
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5
At the end of the road, turn right
7.7 mi · 11 min
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6
Turn right onto South Crossroads Road
4.6 mi · 8 min · South Crossroads Road
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7
Continue on Luxemburg Road
1414 ft · 30 sec · Luxemburg Road
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8
Turn right
1.4 km · 2 min
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9
Turn left onto Market Street
4.1 mi · 7 min · Market Street
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10
Keep slight left to continue on Grove Road
111 m · 12 sec · Grove Road
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11
Turn left
582 ft · 12 sec
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12
Continue straight
13.4 mi · 20 min
-
13
Continue on South Front Street
1865 ft · 32 sec · South Front Street
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14
Take the ramp straight
1.1 km · 1 min
-
15
Keep slight right to continue on US 11 North, US 15 North: Danville, Lewisburg
535 ft · 15 sec
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16
Keep slight right to continue on US 11 North, US 15 North: Danville, Lewisburg
815 ft · 22 sec
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17
Merge slight left onto North Susquehanna Trail
3.2 mi · 5 min · North Susquehanna Trail
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18
Take the exit slight right
2251 ft · 55 sec
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19
Merge slight left onto Central Susquehanna Valley Thruway
11.4 mi · 13 min · Central Susquehanna Valley Thruway
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20
Take the exit slight right toward I 80 West: Bellefonte
1891 ft · 56 sec
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21
Keep slight left
2243 ft · 27 sec
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22
Merge slight left onto Keystone Shortway
191.5 mi · 3 hr 26 min · Keystone Shortway
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23
Take the exit slight right toward I 79 North: Erie
1 km · 1 min
-
24
Merge slight right
65.8 mi · 1 hr 11 min
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25
Take the exit slight right toward PA 5 East, PA 290 East: 12th Street
1388 ft · 50 sec
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26
Turn right onto West 12th Street
2.3 mi · 5 min · West 12th Street
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27
Turn left onto State Street
2318 ft · 2 min · State Street
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28
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.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Keystone Shortway
Merge slight left onto Keystone Shortway
192 mi · 03h 26m
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 Cloudy leaving Williamstown and Mostly Sunny 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 309.1 miles (497.4 km) and usually takes 05h 12m 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?
Treasure Lake is a useful midpoint, sitting about 154.3 miles from Williamstown and 154.8 miles from Erie.
How much longer is the road route than the straight-line distance?
The direct path is about 209.2 miles (336.7 km), while the road route adds roughly 99.9 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 6:36 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $48.70 one way or $97.40 round trip. Estimated CO2 is about 97 kg one way.
What should you check before leaving?
Before you leave, expect Partly Cloudy around Williamstown and Mostly Sunny near Erie.
Stop Ideas Near Treasure Lake
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 Treasure Lake.
Tyrone
Altoona Transportation Center
Johnstown
Huntingdon
Flight Path Map
This map shows the direct air route between Williamstown and Erie. Straight-line distance: 209.25 mi (336.75 km).
#1 Williamstown
Situated in the eastern part of Dauphin County, Pennsylvania, at an elevation of approximately 732 feet above sea level, this borough sits within the Ridge and Valley Appalachian province.
| Population | 0 |
| Coordinates | 40.5800900, -76.6177400 |
| Altitude | 223 |
| 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: 497 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 17m |
| 40 mph (64.37 km/h) | 07h 43m |
| 50 mph (80.47 km/h) | 06h 10m |
| 60 mph (96.56 km/h) | 05h 09m |
| 70 mph (112.65 km/h) | 04h 24m |
| 80 mph (129 km/h) | 03h 51m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.46 | $48.70 | $97.40 |
| Mid-grade | $4.93 | $53.73 | $107.46 |
| Premium | $5.31 | $57.88 | $115.76 |
| Diesel | $6.55 | $71.46 | $142.92 |
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 · Oct 15, 2026