How far is Allentown, PA from Mars, PA?
The driving distance from Allentown, PA to Mars, PA is about 294 miles (473.1 km), with a travel time of about 05h 44m by car.
- The straight-line flight distance is about 237.1 miles (381.5 km).
- For a round trip, plan for roughly 11h 29m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM EDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 05h 44m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Borough of Pennsylvania
Route Weather Snapshot
Check the forecast at both ends before you head out.
Driving Route Map
The map below follows the saved road route between Allentown and Mars.
Turn-by-Turn Driving Directions
Step-by-step road directions between Allentown and Mars.
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1
Start on Tilghman Street
5 mi · 8 min · Tilghman Street
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2
Take the ramp slight left toward US 22 West: Harrisburg
698 ft · 18 sec
-
3
Merge slight left onto Lehigh Valley Thruway
1.1 km · 54 sec · Lehigh Valley Thruway
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4
Merge slight left onto William Penn Highway
43.1 mi · 52 min · William Penn Highway
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5
Continue on 78th Division Highway
7.6 mi · 9 min · 78th Division Highway
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6
Keep slight left to continue on I 81 South: Harrisburg
1.1 km · 49 sec
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7
Merge slight left
36.6 mi · 44 min
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8
Take the exit slight right toward US 11: New Kingstown, Middlesex
1419 ft · 49 sec
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9
Keep slight right to continue on US 11 South
61 m · 8 sec
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10
Merge slight left onto Harrisburg Pike
1.6 km · 2 min · Harrisburg Pike
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11
Take the exit straight toward I 76, PATP
2453 ft · 1 min
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12
Keep slight right to continue on I 76 West: Pittsburgh
1304 ft · 37 sec
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13
Merge slight left onto Pennsylvania Turnpike
188 mi · 3 hr 26 min · Pennsylvania Turnpike
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14
Take the exit slight right toward PA 8: Butler Valley, Pittsburgh, Butler
1282 ft · 54 sec
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15
Keep slight right to continue on PA 8 North: Butler
152 m · 12 sec
-
16
Merge slight left onto William Flinn Highway
2.5 mi · 5 min · William Flinn Highway
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17
Turn right onto Heckert Road
1583 ft · 1 min · Heckert Road
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18
Turn left onto Bakerstown Road
4.1 mi · 7 min · Bakerstown Road
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19
Turn sharp right onto Babcock Boulevard
1.5 km · 2 min · Babcock Boulevard
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20
Turn left onto Mars Valencia Road
1.7 mi · 3 min · Mars Valencia Road
-
21
Continue on Irvine Street
1021 ft · 21 sec · Irvine Street
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22
Turn right onto Crowe Avenue
11 m · 1 sec · Crowe Avenue
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23
Arrive at your destination
0 m · 1 sec · Crowe Avenue
Car Route Details
A richer read on the saved driving route between Allentown and Mars.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Pennsylvania Turnpike
Merge slight left onto Pennsylvania Turnpike
188 mi · 03h 26m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Sunny leaving Allentown and Sunny near Mars.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Allentown to Mars?
The road trip is about 294 miles (473.1 km) and usually takes 05h 44m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
McConnellsburg is a useful midpoint, sitting about 146.8 miles from Allentown and 147.2 miles from Mars.
How much longer is the road route than the straight-line distance?
The direct path is about 237.1 miles (381.5 km), while the road route adds roughly 56.9 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 8:00 AM EDT. If you want a more comfortable same-day return, try to leave by 5:30 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $42.37 one way or $84.74 round trip. Estimated CO2 is about 92.2 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Allentown and Sunny near Mars.
Stop Ideas Near McConnellsburg
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to McConnellsburg.
Hancock, MD
Hagerstown, MD
Martinsburg station
Huntingdon
Flight Path Map
This map shows the direct air route between Allentown and Mars. Straight-line distance: 237.07 mi (381.53 km).
#1 Allentown
The third most populous city in Pennsylvania.
| Population | 121,470 |
| Coordinates | 40.6084300, -75.4901800 |
| Altitude | 103 |
| Country | United States |
#2 Mars
Borough in Butler County, Pennsylvania, USA
| Population | 1,608 |
| Coordinates | 40.6959000, -80.0117300 |
| Altitude | 317 |
| Country | United States |
End: Mars (-80.01173, 40.6959)
Estimated Travel Time
Distance: 473 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 09h 47m |
| 40 mph (64.37 km/h) | 07h 20m |
| 50 mph (80.47 km/h) | 05h 52m |
| 60 mph (96.56 km/h) | 04h 53m |
| 70 mph (112.65 km/h) | 04h 11m |
| 80 mph (129 km/h) | 03h 40m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $42.37 | $84.74 |
| Mid-grade | $4.60 | $47.69 | $95.38 |
| Premium | $4.95 | $51.37 | $102.75 |
| Diesel | $5.98 | $62.01 | $124.03 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Pennsylvania · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.