How far is Erie, PA from Saint Marys, PA?
The driving distance from Erie, PA to Saint Marys, PA is about 140.9 miles (226.8 km), with a travel time of about 02h 52m by car.
- The straight-line flight distance is about 92.3 miles (148.5 km).
- For a round trip, plan for roughly 05h 44m 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 52m.
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 Likely
Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Erie and Saint Marys.
Turn-by-Turn Driving Directions
Step-by-step road directions between Erie and Saint Marys.
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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
67.3 mi · 1 hr 19 min · Southern Tier Expressway
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11
Take the exit slight right toward US 219 South: Limestone, Bradford Pennsylvania
1234 ft · 40 sec
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12
Turn right
2042 ft · 26 sec
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13
Continue straight
38.9 mi · 44 min
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14
Turn slight right onto Wilcox Road
77 m · 9 sec · Wilcox Road
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15
Continue on Wilcox Road
4.2 mi · 5 min · Wilcox Road
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16
Continue on Market Street
1.2 mi · 1 min · Market Street
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17
Continue on Johnsonburg Bypass
1.2 mi · 1 min · Johnsonburg Bypass
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18
Continue on East Center Street
1199 ft · 16 sec · East Center Street
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19
Take the exit slight left
37 m · 4 sec
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20
Continue on Powers Avenue
1.3 km · 1 min · Powers Avenue
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21
Continue on Johnsonburg-Saint Marys Road
2.3 mi · 3 min · Johnsonburg-Saint Marys Road
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22
Continue on Johnsonburg Road
4.4 mi · 7 min · Johnsonburg Road
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23
Continue on Maurus Street
1.1 km · 1 min · Maurus Street
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24
At the end of the road, turn right onto North Michael Street
153 m · 11 sec · North Michael Street
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25
Continue on North Saint Marys Street
113 m · 9 sec · North Saint Marys Street
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26
Turn left onto Railroad Street
59 m · 3 sec · Railroad Street
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27
Arrive at your destination
0 m · 1 sec · Railroad Street
Car Route Details
A richer read on the saved driving route between Erie and Saint Marys.
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
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 Likely leaving Erie and Showers And Thunderstorms near Saint Marys.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Erie to Saint Marys?
The road trip is about 140.9 miles (226.8 km) and usually takes 02h 52m 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 70.4 miles from Erie and 70.5 miles from Saint Marys.
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 12:46 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 Likely around Erie and Showers And Thunderstorms near Saint Marys.
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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Buffalo–Exchange Street
Flight Path Map
This map shows the direct air route between Erie and Saint Marys. Straight-line distance: 92.28 mi (148.51 km).
#1 Erie
The second most populous city in Pennsylvania.
| Population | 95,077 |
| Coordinates | 42.1292200, -80.0850600 |
| Altitude | 199 |
| Country | United States |
#2 Saint Marys
City in Camden County, Georgia, USA
| Population | 12,157 |
| Coordinates | 41.4278400, -78.5608600 |
| Altitude | 506 |
| Country | United States |
End: Saint Marys (-78.56086, 41.42784)
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.