Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
Drive Time
3h 24m
Distance
158.4 mi
255 km
Drive Score
9/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$26
one way
EV Charging
Unknown
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Bethlehem, PA
Wikimedia Commons
Charlestown, PA
Michael Taccetta
Bethlehem, PA to Charlestown, PA is 158.4 miles and takes about 3h 24m via I 81 and William Penn Highway, with a fuel budget near $26 and enough daylight to finish in a day. This trip stays within Pennsylvania, traversing the Northeast region. Expect a mixed drive that balances highway speeds with more local road navigation. It's a manageable distance for a single day, making it a convenient option for a quick journey between these two points.
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
79.2 miles from Bethlehem, PA
A natural place for your longest stop of the day , about 1h 38m into the drive .
| Road | Distance | Duration |
|---|---|---|
| I 81 | 72.6 mi | 1h 27m |
| William Penn Highway | 43.1 mi | 51m |
| Lincoln Way East | 15.2 mi | 25m |
| Lehigh Valley Thruway | 9.8 mi | 13m |
| 78th Division Highway | 7.6 mi | 8m |
| Mountain Road | 3.6 mi | 6m |
| Bethlehem Spur Route | 2.3 mi | 3m |
| East Union Boulevard | 0.8 mi | 1m |
Step-by-step road directions between Bethlehem, PA and Charlestown, PA.
Start on Linden Street
Turn right onto East Union Boulevard
Take the ramp
Merge onto PA 378
Keep slight left at fork
Merge onto US 22
Merge onto I 78; US 22
Continue on I 78; US 22
Keep slight left at fork
Merge onto I 81
Take the exit
Turn right onto US 30
Keep slight right at fork onto US 30
Turn sharp left onto PA 75
Turn right onto Mountain Road
Turn sharp left onto PA 16
Arrive at destination
Given the 3h 24m estimated drive time and 158.4 miles, this trip is easily completed in one day. Consider departing in the morning to take advantage of daylight and avoid potential rush hour traffic. The drive includes one recommended stop, which is a good opportunity to stretch your legs and refuel. With a fuel cost estimate of $26, it's wise to check your fuel levels before you leave Bethlehem, PA, as the longest stretch on I 81 is over 70 miles.
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.
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 35 miles or 46m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 79.2 miles or 1h 38m 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 39m
Traffic, exits, and arrival timing usually matter more near Charlestown, PA than in the middle of the route.
Open the route before leaving Bethlehem, 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 Bethlehem, PA
This is one driving day of about 158.4 miles and 3h 24m.
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
79 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
A short stop after about 35 miles helps settle the day before fatigue starts building.
The midpoint is around 79.2 miles from Bethlehem, PA, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before I 81 if your tank is already low. That segment runs about 72.6 miles.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
5 decision points cluster between mile 3.4 and 138.1 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
Keep slight left at fork toward US 22 West: Allentown
Highway fork - watch signs carefully. Lane positioning matters here
Merge onto US 22 / Lehigh Valley Thruway
Merge point - match speed before joining. Lane positioning matters here
Merge onto I 78; US 22 / William Penn Highway
Merge point - match speed before joining. Lane positioning matters here
Keep slight left at fork toward I 81 South: Harrisburg
Highway fork - watch signs carefully
Take the exit toward Lincoln Way
Exit ramp - move to the correct lane early. Lane positioning matters here
Regular Gas
$26.26 one way
$52.52 round trip
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.61 | $28.76 | $57.52 |
| premium | $4.93 | $30.72 | $61.44 |
| diesel | $5.61 | $34.97 | $69.95 |
Estimated Tolls: $0.69
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
$26
Tolls
$1
Meals
$25–$50
Total
$52–$77
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 55.4 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $17 in charging · 0 stops · 65% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 47.5 | 0 | $16.63 | $7.60 |
| Efficient EV | 39.6 | 0 | $13.86 | $6.34 |
| EV Truck/SUV | 63.4 | 0 | $22.18 | $10.14 |
Gas CO2
55 kg
EV CO2
19 kg (65% 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.
Current conditions at both ends of the drive.
Origin
Morning in Bethlehem on Sunday
Local time
6:30 AM
EDT
Current temp
88°F
Mostly Sunny
Destination
Morning in Charlestown on Sunday
Local time
6:30 AM
EDT
Current temp
48°F
Unavailable
48°F
Middlesex, PA
79 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
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Worth a detour if your schedule allows.
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...
National Scenic Trail
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...
Park data from the National Park Service API. Alerts update every 2 hours.
This route offers a mixed driving experience, with 46% of it on highways. You'll encounter stretches on I 81, which allows for consistent speed, followed by sections on the William Penn Highway and Lincoln Way East. The longest uninterrupted stretch you'll experience is 72.6 miles on I 81, providing a significant period of steady driving. As you transition off the interstate, expect the character of the road to change, offering a different pace and feel.
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 around 3.4 miles in.
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 13 significant decision points across 158.4 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 3.4 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 4.3 miles (US 22 / Lehigh Valley Thruway): Merge point - match speed before joining. Lane positioning matters here; at 14 miles (I 78; US 22 / William Penn Highway): Merge point - match speed before joining. Lane positioning matters here.
Weekend Trip
Doable as a same-day drive at 3h 24m. Total distance: 158.4 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
3h 24m drive, comfortable solo distance.
Scenic Drive
Mixed highway & surface route profile with national parks nearby.
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, and NPS for national parks. See our methodology for refresh cadence and limitations.
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