If you are planning a trip from Guilford Siding to Allentown, expect a 136.1-mile journey that typically takes about 2 hours and 19 minutes to complete. Because this route is entirely comprised of local roads rather than major interstates, it is best suited as a straightforward one-day trip. You should budget approximately $23 for fuel to cover the distance between these two Pennsylvania locations. Since the entire drive stays within the Northeast region, you won't experience drastic shifts in terrain or climate, but you will navigate a consistent local landscape. This drive is ideal for those who prefer avoiding highway congestion in favor of a more direct, ground-level approach to travel.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
67.8 miles from Guilford Siding, PA
A natural place for your longest stop of the day
, about 1h 27m into the drive
.
Main Roads
Road
Distance
Duration
I 81
50 mi
59m
William Penn Highway
42.8 mi
50m
American Legion Memorial Highway
22.5 mi
27m
78th Division Highway
7.6 mi
8m
Tilghman Street
4.9 mi
8m
Wayne Road
1.9 mi
3m
Guilford Station Road
1.3 mi
4m
Lehigh Valley Thruway
1 mi
1m
Longest stretch:
I 81
— 50 mi, about 59m
Turn-by-Turn Driving Directions
Step-by-step road directions between Guilford Siding, PA and Allentown, PA.
1
Start on Church Road
91 ft·11 sec·Church Road
2
Turn sharp left onto Guilford Station Road
1.3 mi·4 min·Guilford Station Road
3
At end of road, turn left onto New Franklin Road
0.6 mi·1 min·New Franklin Road
4
Turn right onto PA 316
1.9 mi·3 min·Wayne Road
5
Continue on PA 316
0.1 mi·9 sec·Wayne Avenue
6
Take the ramp
0.3 mi·41 sec
7
Merge onto I 81
50 mi·59 min·I 81
Use the straight / slight right lanes.
8
Take the exit
0.2 mi·14 sec
Toward US 11, US 15: Enola, Marysville
9
Keep slight left at fork
0.3 mi·28 sec
Toward US 11 North, US 15 North: Marysville
10
Keep slight left at fork
0.4 mi·32 sec
11
Merge onto I 81
0.7 mi·1 min·George N. Wade Memorial Bridge
Use the straight / slight right lanes.
12
Continue on I 81
3.4 mi·4 min·American Legion Memorial Highway
13
Keep slight left at fork onto I 81
19 mi·22 min·American Legion Memorial Highway
Use the straight / slight right lanes.
14
Take the exit
0.7 mi·45 sec
Exit 89Toward I 78 East: Allentown
15
Continue on I 78
7.6 mi·8 min·78th Division Highway
16
Continue on I 78; US 22
43 mi·50 min·William Penn Highway
Use the straight lane.
17
Keep slight right at fork onto US 22
1.0 mi·1 min·Lehigh Valley Thruway
Exit 51Toward US 22 East: Pennsylvania Turnpike, LVI AirportUse the slight right lane.
18
Take the exit
0.2 mi·26 sec
Toward CetroniaUse the slight right lane.
19
Turn straight onto Tilghman Street
4.9 mi·8 min·Tilghman Street
Use the straight lane.
20
Arrive at destination
Tilghman Street
Trip Plan
Since this is a relatively short trip, you have the flexibility to depart whenever fits your schedule best without needing to plan for overnight stops. While the 136.1-mile distance is manageable in a single stretch, keep in mind that the turn-heavy nature of the route may make the drive feel longer than the 2-hour and 19-minute clock time suggests. Ensure your vehicle is fueled up before you head out, as the $23 estimated cost assumes consistent movement on local roads. A helpful tip for this specific drive is to familiarize yourself with the transition points between Guilford Station Road, New Franklin Road, and Wayne Road before you leave, as the lack of highway signage means you will need to pay close attention to local navigation cues.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 67.8 miles from Guilford Siding, PA, or about 1h 27m into the drive.
The longest continuous stretch on this route runs about 50 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 30 miles or 41m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 67.8 miles or 1h 27m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 18m
Traffic, exits, and arrival timing usually matter more near Allentown, PA than in the middle of the route.
Before You Leave
+
Open the route before leaving Guilford Siding, 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 Guilford Siding, PA
This is one driving day of about 135.6 miles and 2h 50m.
Your first comfortable stop window is around 30 miles from Guilford Siding, 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 I 81 for about 50 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 13
5 decision points cluster between mile 0 and 130.4 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
0 mi into trip|~0m in|Guilford Station Road
Turn sharp left onto Guilford Station Road
Sharp turn - reduce speed on approach
6
54.4 mi into trip|~1h 10m in
Keep slight left at fork toward US 11 North, US 15 North: Marysville
Highway fork - watch signs carefully. Multiple destination signs - pick the right one
Toward US 11 North, US 15 North: Marysville
6
59.3 mi into trip|~1h 17m in|I 81 / American Legion Memorial Highway
Keep slight left at fork onto I 81 / American Legion Memorial Highway
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
9
129.5 mi into trip|~2h 40m in|US 22 / Lehigh Valley Thruway
Keep slight right at fork onto US 22 / Lehigh Valley Thruway toward US 22 East: Pennsylvania Turnpike, LVI Airport
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 51
Toward US 22 East: Pennsylvania Turnpike, LVI A...
6
130.4 mi into trip|~2h 42m in
Take the exit toward Cetronia
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Toward Cetronia
Fuel & Cost
Regular Gas
$22.48 one way
$44.96 round trip
$4.21/gal25.4 MPG avg47 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.61
$24.62
$49.24
premium
$4.93
$26.30
$52.60
diesel
$5.61
$29.94
$59.88
Estimated Tolls: $0.07
Lehigh Valley Thruway
(1 mi)$0.07
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
$22
Tolls
$0
Meals
$25–$50
Total
$48–$73
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 47.4 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $14 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
40.7
0
$14.24
$6.51
Efficient EV
33.9
0
$11.86
$5.42
EV Truck/SUV
54.2
0
$18.98
$8.68
Gas CO2
47 kg
EV CO2
16 kg (66% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
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 16, 2026
Origin
Guilford Siding, PA
Morning
in Guilford Siding on Sunday
Local time
8:03 AM
EDT
Current temp
45°F
Unavailable
Live forecast
Destination
Allentown, PA
Morning
in Allentown on Sunday
Local time
8:03 AM
EDT
Current temp
44°F
Unavailable
Live 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
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
2h 50m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
More Details
What kind of drive is this?
Expect a turn-heavy local drive that demands your full attention behind the wheel. With 0% of the route on highways, you will navigate via Guilford Station Road, New Franklin Road, and Wayne Road for the duration of your trip. The road personality here is far from a monotonous interstate grind, requiring you to manage constant turns rather than settling into a long-distance cruise. Because the route relies exclusively on local connectors, there are no extended highway stretches to provide a break from maneuvering. Prepare for a technical, hands-on driving experience where the pace is dictated by local infrastructure rather than open-road speed limits.
37% highway, the rest on surface roads — varied driving throughout.
20 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 50 mi on I 81.
How Hard Is This Drive?
9/10
This route mixes highway mileage with some local-road sections near the start or finish. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes early in the drive near Guilford Station Road.
Driving Effort9/10
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 13 significant decision points across 135.6 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: near the start (Guilford Station Road): Sharp turn - reduce speed on approach; at 54.4 miles: Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 59.3 miles (I 81 / American Legion Memorial Highway): Highway fork - watch signs carefully. Lane positioning matters here.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Guilford Siding, PA to Allentown, PA, road signs begin pointing toward Marysville along the way.
Marysville
54.2 mi in|~1h 10m
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 2h 50m. Total distance: 135.6 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
2h 50m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (37%). Some complex stretches to watch for.
Scenic Drive
Mixed highway & surface route profile.
Frequently Asked Questions
The longest stretch is about 50 miles on I 81. The full list of main roads is in the Roads section above.
Expect about $0.07 in tolls one way, starting with Lehigh Valley Thruway. 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.
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 Allentown, 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: near the start (Guilford Station Road): Sharp turn - reduce speed on approach; at 54.4 miles: Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 59.3 miles (I 81 / American Legion Memorial Highway): Highway fork - watch signs carefully. Lane positioning matters here.
Yes. A round trip is manageable in a single day if you plan a break at Allentown, PA before heading back.
