How far is Decatur, PA from Philadelphia, PA?
The driving distance from Decatur, PA to Philadelphia, PA is about 172.7 miles (277.9 km), with a travel time of about 03h 00m by car.
- The straight-line flight distance is about 131 miles (210.9 km).
- For a round trip, plan for roughly 06h 00m 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 03h 00m.
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.
Unincorporated community in Lebanon County, Pennsylvania
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Decatur and Philadelphia.
Turn-by-Turn Driving Directions
Step-by-step road directions between Decatur and Philadelphia.
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1
Start on Old Stage Road
1.3 km · 2 min · Old Stage Road
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2
Turn left onto Alfarata Road
2.1 mi · 5 min · Alfarata Road
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3
Turn right
7.1 mi · 9 min
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4
Turn right onto Shaw Avenue
109 m · 11 sec · Shaw Avenue
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5
Take the ramp slight right toward US 322 East: Harrisburg, Mount Union
57 m · 6 sec
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6
Merge slight left
53.9 mi · 1 hr 7 min
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7
Take the exit slight right toward I 81 North, US 322 East, I 81 South: Hershey, Hazleton, Carlisle
968 ft · 21 sec
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8
Keep slight left to continue on I 81 North, US 322 East: Hershey, Hazleton
1.4 km · 2 min
-
9
Merge slight left onto American Legion Memorial Highway
1.8 mi · 2 min · American Legion Memorial Highway
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10
Keep slight right to continue on I 83 South, US 322 East: Hershey, York
4.3 mi · 6 min
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11
Keep slight left to continue on I 283 South: Harrisburg International Airport
910 ft · 22 sec
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12
Continue straight
2.8 mi · 5 min
-
13
Keep slight left to continue on I 76 East: Philadelphia
1.1 km · 2 min
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14
Merge slight left onto Pennsylvania Turnpike
78.4 mi · 1 hr 24 min · Pennsylvania Turnpike
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15
Take the exit slight right toward I 76 East: Valley Forge, Philadelphia
18 mi · 26 min
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16
Keep slight left to continue on Vine Street Expressway
1.3 km · 1 min · Vine Street Expressway
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17
Take the exit slight right toward Central Philadelphia
731 ft · 18 sec
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18
Keep slight right to continue on 15th Street, Central Philadelphia
96 m · 11 sec
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19
Turn right onto North 15th Street
1987 ft · 49 sec · North 15th Street
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20
Turn slight left onto South Penn Square
115 m · 9 sec · South Penn Square
-
21
Keep slight left to continue on South Penn Square
51 m · 3 sec · South Penn Square
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22
Arrive at your destination
0 m · 1 sec · South Penn Square
Car Route Details
A richer read on the saved driving route between Decatur and Philadelphia.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Pennsylvania Turnpike
Merge slight left onto Pennsylvania Turnpike
78.4 mi · 01h 24m
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.
Clear leaving Decatur and Sunny near Philadelphia.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Decatur to Philadelphia?
The road trip is about 172.7 miles (277.9 km) and usually takes 03h 00m 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?
Colebrook is a useful midpoint, sitting about 86.2 miles from Decatur and 86.4 miles from Philadelphia.
How much longer is the road route than the straight-line distance?
The direct path is about 131 miles (210.9 km), while the road route adds roughly 41.7 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 12:30 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 Clear around Decatur and Sunny near Philadelphia.
Stop Ideas Near Colebrook
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 Colebrook.
Elizabethtown station
Mount Joy
Middletown
Lancaster station
Flight Path Map
This map shows the direct air route between Decatur and Philadelphia. Straight-line distance: 131.07 mi (210.94 km).
#1 Decatur
Township in Mifflin County, Pennsylvania
| Population | 3,070 |
| Coordinates | 40.6942400, -77.4538800 |
| Altitude | 207 |
| Country | United States |
#2 Philadelphia
The sixth most populous city in the United States and the center of the Philadelphia metropolitan area.
| Population | 1,578,487 |
| Coordinates | 39.9523300, -75.1637900 |
| Altitude | 12 |
| Country | United States |
End: South Penn Square (-75.163922, 39.951648)
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 18m |
| 50 mph (80.47 km/h) | 03h 27m |
| 60 mph (96.56 km/h) | 02h 52m |
| 70 mph (112.65 km/h) | 02h 27m |
| 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 · May 31, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.