How far is Harrisburg, PA from King of Prussia, PA?
The driving distance from Harrisburg, PA to King of Prussia, PA is about 88.7 miles (142.8 km), with a travel time of about 01h 45m by car.
- The straight-line flight distance is about 79.6 miles (128.1 km).
- For a round trip, plan for roughly 03h 31m 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 01h 45m.
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.
Borough in northeastern Lancaster County, Pennsylvania, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms
Mostly Cloudy then Showers And Thunderstorms Likely
Driving Route Map
The map below follows the saved road route between Harrisburg and King of Prussia.
Turn-by-Turn Driving Directions
Step-by-step road directions between Harrisburg and King of Prussia.
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1
Start on North 7th Street
27 m · 3 sec · North 7th Street
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2
Enter the roundabout and take exit 3 toward North 7th Street
64 m · 7 sec · North 7th Street
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3
Exit the roundabout onto North 7th Street
2223 ft · 1 min · North 7th Street
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4
Continue on Fisher Plaza
820 ft · 20 sec · Fisher Plaza
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5
Keep slight left to continue on State Street
2769 ft · 1 min · State Street
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6
Turn right onto North 13th Street
1.2 mi · 2 min · North 13th Street
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7
Turn left
1346 ft · 33 sec
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8
Merge slight left
2.4 mi · 3 min
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9
Take the exit slight right toward I 283 South: Harrisburg International Airport, Lancaster
2242 ft · 55 sec
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10
Merge slight left
2.7 mi · 5 min
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11
Keep slight left to continue on I 76 East: Philadelphia
1.1 km · 2 min
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12
Merge slight left onto Pennsylvania Turnpike
78.4 mi · 1 hr 24 min · Pennsylvania Turnpike
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13
Take the exit slight right toward I 76 East: Valley Forge, Philadelphia
1.1 km · 2 min
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14
Take the exit slight right toward North Gulph Road, Valley Forge, Village Drive
820 ft · 41 sec
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15
Continue on Village Drive
624 ft · 52 sec · Village Drive
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16
Turn right onto North Gulph Road
1689 ft · 45 sec · North Gulph Road
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17
Turn left onto Mall Boulevard
1381 ft · 34 sec · Mall Boulevard
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18
Turn right
56 m · 20 sec
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19
Turn left
29 m · 7 sec
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20
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Harrisburg and King of Prussia.
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.
Showers And Thunderstorms leaving Harrisburg and Mostly Cloudy then Showers And Thunderstorms Likely near King of Prussia.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Harrisburg to King of Prussia?
The road trip is about 88.7 miles (142.8 km) and usually takes 01h 45m 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?
Denver is a useful midpoint, sitting about 44.3 miles from Harrisburg and 44.4 miles from King of Prussia.
How much longer is the road route than the straight-line distance?
The direct path is about 79.6 miles (128.1 km), while the road route adds roughly 9.1 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 2:58 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $12.79 one way or $25.58 round trip. Estimated CO2 is about 27.8 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms around Harrisburg and Mostly Cloudy then Showers And Thunderstorms Likely near King of Prussia.
Stop Ideas Near Denver
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 Denver.
Lancaster station
Mount Joy
Parkesburg
Coatesville
Flight Path Map
This map shows the direct air route between Harrisburg and King of Prussia. Straight-line distance: 79.6 mi (128.1 km).
#1 Harrisburg
The capital of Pennsylvania.
| Population | 49,322 |
| Coordinates | 40.2737000, -76.8844200 |
| Altitude | 101 |
| Country | United States |
#2 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 |
End: King of Prussia (-75.39602, 40.08927)
Estimated Travel Time
Distance: 143 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 57m |
| 40 mph (64.37 km/h) | 02h 13m |
| 50 mph (80.47 km/h) | 01h 46m |
| 60 mph (96.56 km/h) | 01h 28m |
| 70 mph (112.65 km/h) | 01h 16m |
| 80 mph (129 km/h) | 01h 06m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $12.79 | $25.58 |
| Mid-grade | $4.60 | $14.39 | $28.79 |
| Premium | $4.95 | $15.51 | $31.01 |
| Diesel | $5.98 | $18.72 | $37.43 |
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.