Erie to King of Prussia is 393 miles and takes about 7h 29m via Keystone Shortway, with a fuel budget near $70 and enough daylight to finish in a day. This drive stays within Pennsylvania, moving from the Northeast region towards another area in the Northeast. Expect a route that primarily utilizes surface roads, making it a more leisurely pace than a pure interstate trip. With only two recommended stops and a longest stretch of 204.4 miles, it's manageable as a single-day excursion if you start early.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
196.5 miles from Erie, PA
A natural place for your longest stop of the day
, about 3h 35m into the drive
.
Main Roads
Road
Distance
Duration
Keystone Shortway
204.4 mi
3h 39m
Raymond P Shafer Highway
66.8 mi
1h 11m
Pennsylvania Turnpike
27.5 mi
29m
Morgantown Expressway
11.4 mi
12m
State Route 54
11.1 mi
13m
Center Avenue
10.6 mi
12m
Pottsville Pike
10.2 mi
12m
Elysburg Road
9.7 mi
11m
Longest stretch:
Keystone Shortway
— 204.4 mi, about 3h 39m
Traffic on I-80
Hour-of-day weekday pattern from 26 FHWA count stations on your route.
Peak
3 PM
~1,074 veh/hr typical
· worst 1,411
Quietest
2 AM
~183 veh/hr
Peak-to-quiet ratio
5.9×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 52 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Erie, PA and King of Prussia, PA.
1
Start on State Street
0.4 mi·1 min·State Street
2
Turn right onto PA 5; PA 290
2.0 mi·4 min·West 12th Street
Use the straight lane.
3
Turn right onto Greengarden Boulevard
0.1 mi·23 sec·Greengarden Boulevard
Use the straight / right lanes.
4
Turn left onto West Bayfront Parkway
0.2 mi·20 sec·West Bayfront Parkway
5
Continue on I 79
67 mi·1 hr 11 min·Raymond P Shafer Highway
Use the straight / right lanes.
6
Take the exit
0.4 mi·59 sec
Toward I 80 East: Clarion
7
Merge onto I 80
204 mi·3 hr 39 min·Keystone Shortway
8
Take the exit
0.2 mi·26 sec
Toward PA 54: Danville, Washingtonville
9
Turn slight left
79 ft·2 sec
10
Turn right onto PA 54
2.9 mi·3 min·Continental Boulevard
Use the straight / right lanes.
11
Continue on PA 54
0.1 mi·19 sec·Factory Street
12
Continue on PA 54
0.3 mi·49 sec·Danville-Riverside Bridge Road
13
Turn left onto PA 54
9.7 mi·11 min·Elysburg Road
Use the left lane.
14
Continue on PA 54
11 mi·13 min·State Route 54
15
Continue on PA 901
0.4 mi·41 sec·Locust Gap Highway
16
Continue on PA 901
2.2 mi·2 min·Fairgrounds Road
17
Continue on PA 901
9.4 mi·11 min·Sunbury Road
18
Continue on PA 901
0.8 mi·1 min·Sunbury Street
19
Turn right onto PA 901
1.8 mi·2 min·Pottsville Minersville Highway
20
Turn right onto PA 901
4.0 mi·6 min·Gordon Nagle Trail
21
Continue on PA 901
0.2 mi·33 sec·North Sillyman Street
22
Turn left onto PA 183
0.7 mi·2 min·Pottsville Street
23
Turn right onto PA 61
493 ft·6 sec·Route 61 South
24
Continue on PA 61
11 mi·12 min·Center Avenue
Use the straight / right lanes.
25
Continue on PA 61
4.2 mi·5 min·Centre Street
26
Continue on PA 61
0.3 mi·17 sec·South 4th Street
27
Continue on PA 61
2.3 mi·2 min·Pottsville Pike
Use the straight / right lanes.
28
Continue on PA 61
0.6 mi·43 sec·Shoemaker Avenue
Use the straight / right lanes.
29
Continue on PA 61
3.2 mi·3 min·Pottsville Pike
Use the straight / right lanes.
30
Continue on PA 61
1.0 mi·1 min·North Centre Avenue
Use the left / straight / right lanes.
31
Continue on PA 61
4.7 mi·6 min·Pottsville Pike
Use the straight lane.
32
Continue on PA 61
2.8 mi·4 min·Centre Avenue
Use the straight lane.
33
Continue on PA 61
1.2 mi·2 min·North 4th Street
34
Keep slight right at fork onto US 222 BUS
273 ft·4 sec·South 4th Street
35
Continue on US 222 Business
0.3 mi·29 sec·Bingaman Street
36
Take the ramp
0.3 mi·34 sec
Toward US 422 East: Pottstown, Morgantown
37
Merge onto US 422
2.0 mi·2 min·West Shore Bypass
38
Take the exit
0.4 mi·45 sec
Toward I 176 South: MorgantownUse the slight right lane.
39
Continue on I 176
11 mi·12 min·Morgantown Expressway
Use the straight / slight right lanes.
40
Keep slight left at fork
0.4 mi·51 sec
Toward I 76 Toll East: PhiladelphiaUse the straight / slight right lanes.
41
Merge onto I 76; PATP
27 mi·29 min·Pennsylvania Turnpike
Use the straight / slight right lanes.
42
Take the exit onto I 76
0.7 mi·1 min·I 76
Exit 326Toward I 76 East: Valley Forge, PhiladelphiaUse the slight right lane.
43
Take the exit
0.2 mi·40 sec
Exit 327Toward North Gulph Road, Valley Forge, Village DriveUse the slight right lane.
44
Continue on Village Drive
0.1 mi·51 sec·Village Drive
45
Turn right onto North Gulph Road
0.3 mi·45 sec·North Gulph Road
Use the right lane.
46
Turn left onto Mall Boulevard
0.3 mi·34 sec·Mall Boulevard
Use the left lane.
47
Turn right
183 ft·19 sec
Use the right lane.
48
Turn left
94 ft·6 sec
49
Arrive at destination
Trip Plan
To make the most of this 7h 29m drive, aim for an early morning departure from Erie to maximize daylight. With only two planned stops, you can be flexible with their timing, perhaps taking one around the halfway point. Keep an eye on fuel, as the estimated cost is around $70, and plan your refueling stops accordingly, especially before longer stretches on the Keystone Shortway. Since this is a single-day trip, you have the advantage of not needing to rush your final leg into King of Prussia.
Morning Departure
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Evening Departure
This is a long drive — plan for a morning departure or consider splitting it into two days.
You can normally do this drive in one day.
Plan roughly 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 196.5 miles from Erie, PA, or about 3h 35m into the drive.
The longest continuous stretch on this route runs about 204.4 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 86 miles or 1h 36m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 196.5 miles or 3h 35m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 6h 14m
Traffic, exits, and arrival timing usually matter more near King of Prussia, PA than in the middle of the route.
Before You Leave
+
Open the route before leaving Erie, PA so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
+
Pick one backup stop option before the midpoint in case traffic changes your pacing.
Day 1
Settle into the route from Erie, PA
This is one driving day of about 393 miles and 7h 29m.
Your first comfortable stop window is around 86 miles from Erie, PA.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 2 real breaks rather than only quick fuel stops.
The longest stretch is on Keystone Shortway for about 204.4 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 23
5 decision points cluster between mile 0.4 and 392.9 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
0.4 mi into trip|~1m in|PA 5; PA 290 / West 12th Street
Turn right onto PA 5; PA 290 / West 12th Street
Lane positioning matters here
Use the straight lane.
7
363.5 mi into trip|~6h 53m in
Keep slight left at fork toward I 76 Toll East: Philadelphia
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Toward I 76 Toll East: Philadelphia
8
391.4 mi into trip|~7h 23m in|I 76
Take the exit onto I 76 toward I 76 East: Valley Forge, Philadelphia
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 326
Toward I 76 East: Valley Forge, Philadelphia
8
392.1 mi into trip|~7h 25m in
Take the exit toward North Gulph Road, Valley Forge, Village Drive
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 327
Toward North Gulph Road, Valley Forge, Village...
7
392.9 mi into trip|~7h 28m in
Turn right
Lane positioning matters here
Use the right lane.
Fuel & Cost
Regular Gas
$69.50 one way
$139.00 round trip
$4.49/gal25.4 MPG avg138 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.92
$76.12
$152.25
premium
$5.24
$81.14
$162.27
diesel
$5.35
$82.78
$165.56
Estimated Tolls: $3.57
Pennsylvania Turnpike
(27.5 mi)$3.57
Toll estimates based on average 2024-2025 rates. EZ-Pass/SunPass discounts may lower the actual cost.
Estimated Trip Cost (one way, 1 person)
Fuel
$70
Tolls
$4
Meals
$25–$50
Total
$98–$123
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 137.5 kg one way.
Prices: EIA weekly data, 2026-06-01.
Driving Electric?
About $41 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
117.9
1
$41.27
$18.86
Efficient EV
98.3
1
$34.39
$15.72
EV Truck/SUV
157.2
1
$55.02
$25.15
Gas CO2
138 kg
EV CO2
46 kg (67% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Jun 3, 2026
Origin
Erie, PA
Afternoon
in Erie on Wednesday
Local time
3:54 PM
EDT
Current temp
55°F
Mostly Clear
SW 3 mph0% chanceLive forecast
Destination
King of Prussia, PA
Afternoon
in King of Prussia on Wednesday
Local time
3:54 PM
EDT
Current temp
57°F
Partly Cloudy
NW 0 to 5 mph1% chanceLive forecast
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
2 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
7h 29m on the road
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
National Parks Near This Route
Worth a detour if your schedule allows.
Valley Forge National Historical Park
National Historical Park
Valley Forge is the place where George Washington and the Continental Army took refuge during the winter of 1777-1778. Today the park protects 3,500 acres of meadows, woodlands, historic landscapes, a...
Famous as the First State to ratify the Constitution, Delaware was born out of a conflict among three world powers for dominance of the Delaware Valley. From this beginning, the region developed a dis...
16 mi from route
~41 min detour
Free
near mile 379.4
The park represents the founding ideals of the nation, and preserves national and international symbols of freedom and democracy, including Independence Hall and the Liberty Bell. The Declaration of I...
Visit the house where wounded Polish freedom fighter Thaddeus Kosciuszko lived and hear how this brilliant military engineer designed successful fortifications during the American Revolution. See the...
17 mi from route
~41 min detour
Free
near mile 393
The Appalachian Trail is a 2,190+ mile long public footpath that traverses the scenic, wooded, pastoral, wild, and culturally resonant lands of the Appalachian Mountains. Conceived in 1921, built by p...
21 mi from route
~53 min detour
Free
near mile 311.7
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This route is mostly surface roads, with highway driving accounting for only 13% of the total distance. You'll experience a significant stretch of 204.4 miles on the Keystone Shortway, which is the longest continuous section of this drive. After the highway segments, be prepared for more frequent turns and potentially slower speeds as you navigate surface roads.
Only 13% highway — the rest is turn-by-turn surface driving.
49 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 204.4 mi on Keystone Shortway.
How Hard Is This Drive?
8/10
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.4 miles in near PA 5; PA 290 / West 12th Street.
Driving Effort8/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 23 significant decision points across 393 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 0.4 miles (PA 5; PA 290 / West 12th Street): Lane positioning matters here; at 363.5 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 391.4 miles (I 76): Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Elevation Profile
Gently rolling terrain
1,789 ft201 ft
Total Climb
2,507 ft
Total Descent
2,959 ft
Highest Point
1,789 ft
~140.4 mi in
Elevation Range
1,589 ft
Notable High Points
1,229 ft at ~308.8 miles+569 ft prominence
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Erie, PA and King of Prussia, PA, road signs point toward Washingtonville and Morgantown.
King of Prussia is a suburban community in the greater Philadelphia region of Pennsylvania in Montgomery County. It is northwest of Philadelphia proper. It is located in the township of Upper Merion, PA. The community took its name in the 18th century from a local tavern named "The King of Prussia Inn", which was named after Frederick II, King of Prussia. King of Prussia's boundaries are the Schuylkill River to the north and U.S Route 422 to the west. Located to the west of King of Prussia is the village of Valley Forge, where General George Washington and the Continental Army made a winter encampment during the winter of 1777-78.
Top landmarks
•National Memorial Arch — triumphal arch in Pennsylvania, U.S.
Doable as a same-day drive at 7h 29m. Total distance: 393 miles.
Family Friendly
Moderate complexity with 2 natural rest stops along the way.
Solo Traveler
7h 29m drive, plan rest stops for pacing.
Scenic Drive
Mostly surface roads route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 204.4 miles on Keystone Shortway. The full list of main roads is in the Roads section above.
Expect about $3.57 in tolls one way, starting with Pennsylvania Turnpike. Most Northeast and Midwest toll agencies accept E-ZPass; in the West and Texas, transponders like TxTag or FasTrak apply. If you do not have a transponder, cashless tolling plates will mail a bill to the vehicle's registered address — usually with a surcharge, so a rental-car toll pass is often cheaper than paying by mail.
Yes — we found about 32 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at King of Prussia, PA before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 2 meaningful breaks. There are 32 rest areas along the route for bathroom stops.
The main spots that need attention: at 0.4 miles (PA 5; PA 290 / West 12th Street): Lane positioning matters here; at 363.5 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 391.4 miles (I 76): Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — Valley Forge National Historical Park, First State National Historical Park and Independence National Historical Park (5 total within detour distance). See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 7.5 hours each way, a round trip means 15.0 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at King of Prussia, PA before the return drive.
