Allentown to Darlington is 318.3 miles and takes about 6 hours 8 minutes via the Pennsylvania Turnpike and I-81, with a fuel budget near $53 and enough daylight to finish in a day. This highway-focused drive primarily stays within Pennsylvania, making it a straightforward trip for those looking to cover ground efficiently. You'll be spending a significant portion of your time on major interstates, so expect a consistent pace. With a recommended one-day drive, this route is ideal for a quick transit between these two points without extensive detours.
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
159.1 miles from Allentown, PA
A natural place for your longest stop of the day
, about 3h 8m into the drive
.
Main Roads
Road
Distance
Duration
Pennsylvania Turnpike
214.2 mi
3h 54m
William Penn Highway
43.1 mi
51m
I 81
36.6 mi
44m
78th Division Highway
7.6 mi
8m
Tilghman Street
5 mi
8m
Fairlane Boulevard
4.4 mi
7m
Elmwood Boulevard
1.9 mi
3m
Big Beaver Boulevard
1.3 mi
2m
Longest stretch:
Pennsylvania Turnpike
— 214.2 mi, about 3h 54m
Traffic on I-81
Hour-of-day weekday pattern from 28 FHWA count stations on your route.
Peak
4 PM
~2,785 veh/hr typical
Quietest
1 AM
~380 veh/hr
Peak-to-quiet ratio
7.3×
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 Allentown, PA and Darlington, 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
214 mi·3 hr 54 min·Pennsylvania Turnpike
14
Take the exit
0.3 mi·37 sec
Exit 13Toward PA 18: Ellwood City, Beaver FallsUse the slight right lane.
15
Turn right onto PA 18
1.3 mi·2 min·Big Beaver Boulevard
Use the left / straight lanes.
16
Turn left onto PA 351
4.4 mi·7 min·Fairlane Boulevard
Use the left lane.
17
At end of road, turn left onto PA 168
0.3 mi·31 sec·Centennial Avenue
18
Continue on PA 168
1.9 mi·3 min·Elmwood Boulevard
19
Continue on PA 168
415 ft·8 sec·2nd Street
20
Arrive at destination
PA 168
Trip Plan
For this 6-hour journey, starting your drive in the morning will allow ample time to reach Darlington before evening. Given the longest stretch is over 200 miles, plan for one substantial stop around the halfway point for fuel and a break. Keep an eye on your fuel gauge, especially as you approach the end of that long Pennsylvania Turnpike segment, as services can be spaced out. Since this is a single-day trip, you have flexibility; however, staying on schedule ensures a relaxed arrival.
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 1 meaningful break for fuel, food, and rest.
The halfway point lands around 159.1 miles from Allentown, PA, or about 3h 8m into the drive.
The longest continuous stretch on this route runs about 214.2 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 70 miles or 1h 25m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 159.1 miles or 3h 8m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 5h
Traffic, exits, and arrival timing usually matter more near Darlington, 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 318.3 miles and 6h 8m.
Your first comfortable stop window is around 70 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 214.2 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 16
5 decision points cluster between mile 56.5 and 310 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
56.5 mi into trip|~1h 9m in
Keep slight left at fork toward I 81 South: Harrisburg
Highway fork - watch signs carefully
Exit 1B
Toward I 81 South: Harrisburg
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
7
95.6 mi into trip|~1h 59m in
Keep slight right at fork toward I 76 West: Pittsburgh
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
Toward I 76 West: Pittsburgh
8
310 mi into trip|~5h 53m in
Take the exit toward PA 18: Ellwood City, Beaver Falls
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 13
Toward PA 18: Ellwood City, Beaver Falls
Fuel & Cost
Regular Gas
$50.75 one way
$101.51 round trip
$4.05/gal25.4 MPG avg111 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.48
$56.17
$112.33
premium
$4.81
$60.25
$120.50
diesel
$4.80
$60.10
$120.20
Estimated Tolls: $27.90
Pennsylvania Turnpike
(214.2 mi)$27.85
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
$51
Tolls
$28
Meals
$25–$50
Total
$104–$129
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 111.4 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $33 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
95.5
1
$33.42
$15.28
Efficient EV
79.6
0
$27.85
$12.73
EV Truck/SUV
127.3
1
$44.56
$20.37
Gas CO2
111 kg
EV CO2
37 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 Jul 17, 2026
Origin
Allentown, PA
Afternoon
in Allentown on Sunday
Local time
3:06 PM
EDT
Current temp
87°F
Smoke
NW 5 mph0% chanceLive forecast
Destination
Darlington, PA
Afternoon
in Darlington on Sunday
Local time
3:06 PM
EDT
Current temp
86°F
Smoke
NW 2 mph0% chanceLive forecast
82°F
Martinsburg, PA
159 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
1 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
6h 8m 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.
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...
8 mi from route
~20 min detour
Free
near mile 197.5
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...
24 mi from route
~61 min detour
Free
near mile 230.5
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...
24 mi from route
~60 min detour
Free
near mile 186.6
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This is largely a highway-focused drive, with 79% of the route utilizing major roads like the Pennsylvania Turnpike and I-81. You'll experience long stretches of consistent speed, including a significant 214.2-mile segment on the Pennsylvania Turnpike. While the profile suggests a highway-centric experience, the inclusion of William Penn Highway indicates some potential for more local road sections, offering a slight change of pace. Overall, anticipate a drive characterized by efficient travel and minimal slowdowns.
79% highway — fuel and pacing are the main things to plan.
20 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 214.2 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 56.5 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 16 significant decision points across 318.3 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 56.5 miles: Highway fork - watch signs carefully; 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.
Elevation Profile
Gently rolling terrain
2,257 ft346 ft
Total Climb
2,506 ft
Total Descent
1,940 ft
Highest Point
2,257 ft
~204.6 mi in
Elevation Range
1,911 ft
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 Darlington, PA, road signs point toward Middlesex and Patp.
Allentown is the largest city in the Lehigh Valley region of eastern Pennsylvania, the county seat and largest city in Lehigh County, and the third-largest city in Pennsylvania after Philadelphia and Pittsburgh with a population of 125,845 as of 2020.
Top landmarks
•Albertus L. Meyers Bridge — bridge in United States of America
•Allentown Masonic Temple — masonic temple in Allentown, Pennsylvania
•Allentown National Bank — bank building in Allentown, Pennsylvania
Doable as a same-day drive at 6h 8m. Total distance: 318.3 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
6h 8m drive, plan rest stops for pacing.
Frequently Asked Questions
The longest stretch is about 214.2 miles on Pennsylvania Turnpike. The full list of main roads is in the Roads section above.
Expect about $27.90 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 24 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 Darlington, 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. There are 24 rest areas along the route for bathroom stops.
The main spots that need attention: at 56.5 miles: Highway fork - watch signs carefully; 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.
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 6.1 hours each way, a round trip means 12.3 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Darlington, PA before the return drive.
