How far is Saint Marys, PA from Erie, PA?
The driving distance from Saint Marys, PA to Erie, PA is about 140.9 miles (226.7 km), with a travel time of about 02h 36m by car.
- The straight-line flight distance is about 92.3 miles (148.5 km).
- For a round trip, plan for roughly 05h 12m 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 36m.
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.
Township in Chester County, Pennsylvania
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms
Showers And Thunderstorms Likely
Driving Route Map
The map below follows the saved road route between Saint Marys and Erie.
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint Marys and Erie.
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1
Start on Railroad Street
14 m · 2 sec · Railroad Street
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2
Turn left onto South Michael Street
117 m · 9 sec · South Michael Street
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3
Continue on North Michael Street
551 ft · 14 sec · North Michael Street
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4
Turn left onto Maurus Street
1.1 km · 1 min · Maurus Street
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5
Continue on Johnsonburg Road
4.4 mi · 7 min · Johnsonburg Road
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6
Continue on Johnsonburg-Saint Marys Road
2.3 mi · 3 min · Johnsonburg-Saint Marys Road
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7
Continue on Powers Avenue
1.3 km · 1 min · Powers Avenue
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8
Keep slight right
45 m · 5 sec
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9
Merge slight left
6.6 mi · 8 min
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10
Keep slight right
39.5 mi · 45 min
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11
Take the exit left
1903 ft · 46 sec
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12
Merge slight left onto Southern Tier Expressway
67.3 mi · 1 hr 19 min · Southern Tier Expressway
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13
Continue on Hopkins-Bowser Highway
6.8 mi · 8 min · Hopkins-Bowser Highway
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14
Keep slight left to continue on I-90: Erie
1.2 mi · 1 min
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15
Merge slight left onto AMVETS Memorial Highway
3.4 mi · 4 min · AMVETS Memorial Highway
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16
Take the exit slight right toward PA 290, PA 430: Wesleyville, Bayfront Connector
1507 ft · 54 sec
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17
Turn right onto Station Road
1.5 km · 2 min · Station Road
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18
Continue on Bayfront Connector
4.4 mi · 8 min · Bayfront Connector
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19
Continue on East Bayfront Parkway
836 ft · 26 sec · East Bayfront Parkway
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20
Turn left onto East 10th Street
1.1 mi · 3 min · East 10th Street
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21
Turn right onto State Street
1499 ft · 59 sec · State Street
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22
Arrive at your destination
0 m · 1 sec · State Street
Car Route Details
A richer read on the saved driving route between Saint Marys 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.
Southern Tier Expressway
Merge slight left onto Southern Tier Expressway
67.3 mi · 01h 19m
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.
Showers And Thunderstorms leaving Saint Marys 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 Saint Marys to Erie?
The road trip is about 140.9 miles (226.7 km) and usually takes 02h 36m 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?
West Bradford is a useful midpoint, sitting about 70.3 miles from Saint Marys and 70.5 miles from Erie.
How much longer is the road route than the straight-line distance?
The direct path is about 92.3 miles (148.5 km), while the road route adds roughly 48.6 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 1:18 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $20.31 one way or $40.61 round trip. Estimated CO2 is about 44.2 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms around Saint Marys and Showers And Thunderstorms Likely near Erie.
Stop Ideas Near West Bradford
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 West Bradford.
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Flight Path Map
This map shows the direct air route between Saint Marys and Erie. Straight-line distance: 92.28 mi (148.51 km).
#1 Saint Marys
City in Camden County, Georgia, USA
| Population | 12,157 |
| Coordinates | 41.4278400, -78.5608600 |
| Altitude | 506 |
| 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: 227 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 41m |
| 40 mph (64.37 km/h) | 03h 31m |
| 50 mph (80.47 km/h) | 02h 49m |
| 60 mph (96.56 km/h) | 02h 20m |
| 70 mph (112.65 km/h) | 02h 00m |
| 80 mph (129 km/h) | 01h 45m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $20.31 | $40.61 |
| Mid-grade | $4.60 | $22.86 | $45.71 |
| Premium | $4.95 | $24.62 | $49.24 |
| Diesel | $5.98 | $29.72 | $59.44 |
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.