How far is Norristown, PA from Saint Marys, PA?
The driving distance from Norristown, PA to Saint Marys, PA is about 273.5 miles (440.1 km), with a travel time of about 05h 20m by car.
- The straight-line flight distance is about 191.1 miles (307.6 km).
- For a round trip, plan for roughly 10h 40m 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 20m.
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 in central Montour County, Pennsylvania
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers
Chance Rain And Snow Showers
Driving Route Map
The map below follows the saved road route between Norristown and Saint Marys.
Turn-by-Turn Driving Directions
Step-by-step road directions between Norristown and Saint Marys.
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1
Start on Spring Alley
14 m · 11 sec · Spring Alley
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2
Turn sharp left onto Powell Street
582 ft · 28 sec · Powell Street
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3
Turn right onto East Spruce Street
669 ft · 37 sec · East Spruce Street
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4
Turn left onto Dekalb Street
1.4 km · 2 min · Dekalb Street
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5
Turn right onto East Johnson Highway
2813 ft · 1 min · East Johnson Highway
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6
Continue on Plymouth Road
1.4 km · 2 min · Plymouth Road
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7
Turn left onto Sandy Hill Road
56 m · 6 sec · Sandy Hill Road
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8
Keep slight right to continue on Plymouth Road
1 mi · 3 min · Plymouth Road
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9
Turn right onto West Germantown Pike
26 m · 2 sec · West Germantown Pike
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10
Take the ramp straight toward I 276, PATP, I 476 North: Harrisburg, New Jersey
1506 ft · 37 sec
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11
Keep slight right to continue on I 276 East: Northeast Extension, Allentown, New Jersey
1131 ft · 29 sec
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12
Merge slight left onto Pennsylvania Turnpike
2871 ft · 35 sec · Pennsylvania Turnpike
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13
Take the exit slight right toward I 476 North: Northeast Extension, Allentown
2275 ft · 1 min
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14
Merge slight left onto Pennsylvania Turnpike Northeast Extension
74.4 mi · 1 hr 21 min · Pennsylvania Turnpike Northeast Extension
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15
Take the exit slight right toward PA 940, I 80: Hazleton, Mount Pocono
1.1 km · 2 min
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16
Keep slight left
879 ft · 24 sec
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17
Keep slight right to continue on I 80 West: Hazleton
1650 ft · 40 sec
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18
Merge slight left onto Keystone Shortway
165.5 mi · 3 hr · Keystone Shortway
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19
Take the exit slight right toward PA 153: Clearfield, Penfield
2880 ft · 1 min
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20
Keep slight right
1315 ft · 32 sec
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21
Turn straight onto State Park Road
7.5 mi · 13 min · State Park Road
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22
Turn right onto Bennetts Valley Highway
7.9 mi · 13 min · Bennetts Valley Highway
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23
Continue on Million Dollar Highway
1235 ft · 21 sec · Million Dollar Highway
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24
Continue on Bennetts Valley Highway
2.6 mi · 4 min · Bennetts Valley Highway
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25
Turn straight onto Million Dollar Highway
8.1 mi · 12 min · Million Dollar Highway
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26
Continue on South Saint Marys Street
747 ft · 15 sec · South Saint Marys Street
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27
Turn right onto Railroad Street
31 m · 2 sec · Railroad Street
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28
Arrive at your destination
0 m · 1 sec · Railroad Street
Car Route Details
A richer read on the saved driving route between Norristown and Saint Marys.
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
166 mi · 03h 00m
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.
Rain Showers leaving Norristown and Chance Rain And Snow Showers near Saint Marys.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Norristown to Saint Marys?
The road trip is about 273.5 miles (440.1 km) and usually takes 05h 20m 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?
Washingtonville is a useful midpoint, sitting about 136.6 miles from Norristown and 136.9 miles from Saint Marys.
How much longer is the road route than the straight-line distance?
The direct path is about 191.1 miles (307.6 km), while the road route adds roughly 82.4 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 6:20 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $39.43 one way or $78.86 round trip. Estimated CO2 is about 85.8 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers around Norristown and Chance Rain And Snow Showers near Saint Marys.
Stop Ideas Near Washingtonville
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 Washingtonville.
Wilkes-Barre, PA
White Haven, PA
Harrisburg Transportation Center
Lewistown
Flight Path Map
This map shows the direct air route between Norristown and Saint Marys. Straight-line distance: 191.16 mi (307.64 km).
#1 Norristown
County seat of Montgomery County, Pennsylvania, United States
| Population | 34,323 |
| Coordinates | 40.1215000, -75.3399000 |
| Altitude | 48 |
| 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: 440 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 09h 06m |
| 40 mph (64.37 km/h) | 06h 50m |
| 50 mph (80.47 km/h) | 05h 28m |
| 60 mph (96.56 km/h) | 04h 33m |
| 70 mph (112.65 km/h) | 03h 54m |
| 80 mph (129 km/h) | 03h 24m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $39.43 | $78.86 |
| Mid-grade | $4.60 | $44.38 | $88.76 |
| Premium | $4.95 | $47.81 | $95.61 |
| Diesel | $5.98 | $57.71 | $115.41 |
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.