How far is King of Prussia, PA from Philadelphia, PA?
The driving distance from King of Prussia, PA to Philadelphia, PA is about 19.4 miles (31.3 km), with a travel time of about 00h 36m by car.
- The straight-line flight distance is about 15.5 miles (25 km).
- For a round trip, plan for roughly 01h 13m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM EDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 00h 36m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
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.
Town and community in Pembrokeshire, Wales
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy then Showers And Thunderstorms Likely
Partly Sunny then Showers And Thunderstorms Likely
Driving Route Map
The map below follows the saved road route between King of Prussia and Philadelphia.
Turn-by-Turn Driving Directions
Step-by-step road directions between King of Prussia and Philadelphia.
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1
Start on the route
19 m · 6 sec
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2
Turn right
54 m · 15 sec
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3
Turn left onto Mall Boulevard
1406 ft · 38 sec · Mall Boulevard
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4
Turn right onto North Gulph Road
1529 ft · 35 sec · North Gulph Road
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5
Take the ramp right toward I 76 East: Philadelphia
586 ft · 26 sec
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6
Merge slight left onto Schuylkill Expressway
17.3 mi · 24 min · Schuylkill Expressway
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7
Keep slight left to continue on Vine Street Expressway
1.3 km · 1 min · Vine Street Expressway
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8
Take the exit slight right toward Central Philadelphia
731 ft · 18 sec
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9
Keep slight right to continue on 15th Street, Central Philadelphia
96 m · 11 sec
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10
Turn right onto North 15th Street
1987 ft · 49 sec · North 15th Street
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11
Turn slight left onto South Penn Square
115 m · 9 sec · South Penn Square
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12
Keep slight left to continue on South Penn Square
51 m · 3 sec · South Penn Square
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13
Arrive at your destination
0 m · 1 sec · South Penn Square
Car Route Details
A richer read on the saved driving route between King of Prussia and Philadelphia.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Schuylkill Expressway
Merge slight left onto Schuylkill Expressway
17.3 mi · 00h 24m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Mostly Cloudy then Showers And Thunderstorms Likely leaving King of Prussia and Partly Sunny then Showers And Thunderstorms Likely near Philadelphia.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from King of Prussia to Philadelphia?
The road trip is about 19.4 miles (31.3 km) and usually takes 00h 36m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Narberth is a useful midpoint, sitting about 9.7 miles from King of Prussia and 9.8 miles from Philadelphia.
How much longer is the road route than the straight-line distance?
The direct path is about 15.5 miles (25 km), while the road route adds roughly 3.9 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 7:00 AM to 7:00 PM EDT. If you want a more comfortable same-day return, try to leave by 7:16 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $2.82 one way or $5.64 round trip. Estimated CO2 is about 6.1 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy then Showers And Thunderstorms Likely around King of Prussia and Partly Sunny then Showers And Thunderstorms Likely near Philadelphia.
Stop Ideas Near Narberth
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Bluestone Lane City Hall Coffee Shop
Dilworth Park
Philadelphia Marriage License
City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Narberth.
Ardmore
North Philadelphia station
30th Street Station
Pennsauken, NJ
Flight Path Map
This map shows the direct air route between King of Prussia and Philadelphia. Straight-line distance: 15.51 mi (24.96 km).
#1 King of Prussia
Census-designated place in Montgomery County, Pennsylvania, United States
| Population | 19,936 |
| Coordinates | 40.0892700, -75.3960200 |
| Altitude | 61 |
| 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: 31 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 38m |
| 40 mph (64.37 km/h) | 00h 29m |
| 50 mph (80.47 km/h) | 00h 23m |
| 60 mph (96.56 km/h) | 00h 19m |
| 70 mph (112.65 km/h) | 00h 16m |
| 80 mph (129 km/h) | 00h 14m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $2.82 | $5.64 |
| Mid-grade | $4.60 | $3.17 | $6.35 |
| Premium | $4.95 | $3.42 | $6.84 |
| Diesel | $5.98 | $4.13 | $8.25 |
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 13, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.