Allentown to Greenfield is 278.4 miles and takes about 5h 28m via Pennsylvania Turnpike, William Penn Highway, and I 81, with a fuel budget near $46 and enough daylight to finish in a day. This trip stays within Pennsylvania, traversing the Northeast region for its entirety. Expect a drive that's largely highway-focused, making it a straightforward option if you're looking for efficiency. With only one recommended stop and a significant portion on major interstates, it’s designed for making good time. Consider this route if you prioritize reaching your destination with minimal fuss.
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
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
139.2 miles from Allentown, PA
A natural place for your longest stop of the day
, about 2h 47m into the drive
.
Main Roads
Road
Distance
Duration
Pennsylvania Turnpike
170.5 mi
3h 7m
William Penn Highway
43.1 mi
51m
I 81
36.6 mi
44m
Penn-Lincoln Parkway East
9.8 mi
13m
78th Division Highway
7.6 mi
8m
Tilghman Street
5 mi
8m
Harrisburg Pike
1 mi
2m
Lehigh Valley Thruway
0.7 mi
<1m
Longest stretch:
Pennsylvania Turnpike
— 170.5 mi, about 3h 7m
Turn-by-Turn Driving Directions
Step-by-step road directions between Allentown, PA and Greenfield, PA.
1
Start on Tilghman Street
5.0 mi·8 min·Tilghman Street
Use the straight lane.
2
Take the ramp
0.1 mi·18 sec
Toward US 22 West: Harrisburg
3
Merge onto US 22
0.7 mi·54 sec·Lehigh Valley Thruway
4
Merge onto I 78; US 22
43 mi·51 min·William Penn Highway
Use the straight lane.
5
Continue on I 78; US 22
7.6 mi·8 min·78th Division Highway
6
Keep slight left at fork
0.7 mi·49 sec
Exit 1BToward I 81 South: Harrisburg
7
Merge onto I 81
37 mi·44 min·I 81
8
Take the exit
0.3 mi·48 sec
Exit 52Toward US 11: New Kingstown, MiddlesexUse the slight right lane.
9
Keep slight right at fork
201 ft·7 sec
Toward US 11 SouthUse the right lane.
10
Merge onto US 11
1.0 mi·2 min·Harrisburg Pike
Use the straight / right lanes.
11
Take the exit
0.5 mi·1 min
Toward I 76, PATP
12
Keep slight right at fork
0.2 mi·37 sec
Toward I 76 West: PittsburghUse the slight right lane.
13
Merge onto I 76; PATP
171 mi·3 hr 7 min·Pennsylvania Turnpike
14
Take the exit
0.6 mi·2 min
Exit 57Toward I 376 West, US 22: Pittsburgh, MonroevilleUse the slight right lane.
15
Keep slight left at fork
0.2 mi·23 sec
Toward US 22 Business, I 376 West, US 22 West: Monroeville, Pittsburgh
16
Keep slight right at fork
353 ft·8 sec
Toward I 376 West, US 22 West: Pittsburgh
17
Merge onto I 376; US 22
9.8 mi·13 min·Penn-Lincoln Parkway East
Use the slight left lane.
18
Take the exit
0.3 mi·1 min
Exit 74Toward Squirrel Hill, HomesteadUse the slight right lane.
19
Turn right
222 ft·12 sec
Toward GreenfieldUse the straight / slight right lanes.
20
Turn straight onto Beechwood Boulevard
0.5 mi·1 min·Beechwood Boulevard
21
Continue on Alger Street
353 ft·16 sec·Alger Street
22
Turn left onto Winterburn Avenue
304 ft·13 sec·Winterburn Avenue
23
Turn right onto Greenfield Avenue
0.2 mi·39 sec·Greenfield Avenue
24
Turn left onto Haldane Street
0.3 mi·1 min·Haldane Street
25
Turn right onto Alma Street
252 ft·11 sec·Alma Street
26
Arrive at destination
Alma Street
Trip Plan
Given the 5h 28m estimated drive time and the 278.4-mile distance, starting your journey in the morning is your best bet to arrive with ample daylight. With only one stop recommended, plan this strategically for fuel and a quick break. The longest uninterrupted stretch is 170.5 miles on the Pennsylvania Turnpike, so be sure to fuel up before embarking on that segment. While the route is primarily highway, keep an eye on your fuel gauge, especially before entering that long stretch, as services can be spread out.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 139.2 miles from Allentown, PA, or about 2h 47m into the drive.
The longest continuous stretch on this route runs about 170.5 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 61 miles or 1h 15m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 139.2 miles or 2h 47m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 4h 25m
Traffic, exits, and arrival timing usually matter more near Greenfield, PA than in the middle of the route.
Before You Leave
+
Open the route before leaving Allentown, 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.
Day 1
Settle into the route from Allentown, PA
This is one driving day of about 278.4 miles and 5h 28m.
Your first comfortable stop window is around 61 miles from Allentown, PA.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on Pennsylvania Turnpike for about 170.5 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 22
5 decision points cluster between mile 93.8 and 277.3 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
93.8 mi into trip|~1h 54m in
Take the exit toward US 11: New Kingstown, Middlesex
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 52
Toward US 11: New Kingstown, Middlesex
8
94.1 mi into trip|~1h 55m in
Keep slight right at fork toward US 11 South
Highway fork - watch signs carefully. Lane positioning matters here
Use the right lane.
Toward US 11 South
8
266.3 mi into trip|~5h 7m in
Take the exit toward I 376 West, US 22: Pittsburgh, Monroeville
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 57
Toward I 376 West, US 22: Pittsburgh, Monroevil...
8
277 mi into trip|~5h 23m in
Take the exit toward Squirrel Hill, Homestead
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 74
Toward Squirrel Hill, Homestead
8
277.3 mi into trip|~5h 24m in
Turn right toward Greenfield
Lane positioning matters here
Use the straight / slight right lanes.
Toward Greenfield
Fuel & Cost
Regular Gas
$46.16 one way
$92.31 round trip
$4.21/gal25.4 MPG avg97 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.61
$50.55
$101.10
premium
$4.93
$53.99
$107.98
diesel
$5.61
$61.47
$122.93
Estimated Tolls: $22.22
Pennsylvania Turnpike
(170.5 mi)$22.17
Lehigh Valley Thruway
(0.7 mi)$0.05
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
$46
Tolls
$22
Meals
$25–$50
Total
$93–$118
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 97.4 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $29 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
83.5
1
$29.23
$13.36
Efficient EV
69.6
0
$24.36
$11.14
EV Truck/SUV
111.4
1
$38.98
$17.82
Gas CO2
97 kg
EV CO2
33 kg (66% 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 Apr 18, 2026
Origin
Allentown, PA
Morning
in Allentown on Sunday
Local time
8:14 AM
EDT
Current temp
56°F
Mostly Cloudy
E 0 to 5 mph0% chanceLive forecast
Destination
Greenfield, PA
Morning
in Greenfield on Sunday
Local time
8:14 AM
EDT
Current temp
73°F
Unavailable
Live forecast
54°F
Hancock, MD
139 mi in
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
17 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
5h 28m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
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.
Carlisle Federal Indian Boarding School National Monument
National Monument
More than 7,800 children from 140 Tribes went to the Carlisle School from 1879 to 1918. The National Park Service will collaborate with families, affiliated Tribal Nations, the US Army, historians, an...
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...
On Tuesday morning, September 11, 2001, the U.S. came under attack when four commercial airliners were hijacked and used to strike targets on the ground. Nearly 3,000 people tragically lost their live...
6 mi from route
~15 min detour
Free
near mile 201.6
The battle at Fort Necessity in the summer of 1754 was the opening action of the French and Indian War. This war was a clash of British, French and American Indian cultures. It ended with the removal...
25 mi from route
~61 min detour
Free
near mile 230.4
The South Fork Dam failed on Friday, May 31, 1889, and unleashed 20,000,000 tons of water that devastated Johnstown, PA. The flood killed 2,209 people but it brought the nation and the world together...
25 mi from route
~62 min detour
Free
near mile 182.4
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This drive is predominantly highway-focused, with 78% of the journey utilizing major roadways. You'll spend a significant amount of time on the Pennsylvania Turnpike, including a lengthy stretch of 170.5 miles without a major change in road type. The route then transitions to the William Penn Highway and I 81, offering a mix of interstate speeds and potentially slightly more varied scenery as you progress. While not entirely monotonous, the character leans heavily towards efficient travel on well-maintained highways.
78% highway — fuel and pacing are the main things to plan.
26 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 170.5 mi on Pennsylvania Turnpike.
How Hard Is This Drive?
10/10
This is a straightforward highway drive that stays mostly on Pennsylvania Turnpike and William Penn Highway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 93.8 miles in.
Driving Effort10/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 22 significant decision points across 278.4 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 93.8 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 94.1 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 266.3 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Allentown, PA and Greenfield, PA, road signs point toward Middlesex and Patp.
Middlesex
93.8 mi in|~1h 54m
Patp
95.1 mi in|~1h 57m
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 5h 28m. Total distance: 278.4 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
5h 28m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (78%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 170.5 miles on Pennsylvania Turnpike. The full list of main roads is in the Roads section above.
Expect about $22.22 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.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
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 Greenfield, 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 1 meaningful breaks. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 93.8 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 94.1 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 266.3 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — Carlisle Federal Indian Boarding School National Monument, Appalachian National Scenic Trail and Flight 93 National Memorial (5 total within detour distance). See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 5.5 hours each way, a round trip means 11.0 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Greenfield, PA before the return drive.
