How far is Gaithersburg, MD from Williamsport, MD?
The driving distance from Gaithersburg, MD to Williamsport, MD is about 52 miles (83.7 km), with a travel time of about 01h 02m by car.
- The straight-line flight distance is about 45.7 miles (73.6 km).
- For a round trip, plan for roughly 02h 05m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM EDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 01h 02m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Town in Frederick County, Maryland, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers Likely
Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Gaithersburg and Williamsport.
Turn-by-Turn Driving Directions
Step-by-step road directions between Gaithersburg and Williamsport.
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1
Start on the route
26 m · 12 sec
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2
Turn left onto North Frederick Avenue
1.4 km · 1 min · North Frederick Avenue
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3
Turn left onto Quince Orchard Road
1131 ft · 28 sec · Quince Orchard Road
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4
Take the ramp slight right toward I 270 North
1199 ft · 29 sec
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5
Merge slight left
20.2 mi · 25 min
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6
Take the exit slight right toward I 70: Hagerstown, Baltimore
1986 ft · 31 sec
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7
Keep slight left to continue on I 70 West: Hagerstown
1899 ft · 29 sec
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8
Merge slight right
26.9 mi · 29 min
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9
Take the exit slight right toward I 81 North, I 81 South: Harrisburg, Roanoke
628 ft · 15 sec
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10
Keep slight left to continue on I 81 South: Roanoke
1401 ft · 34 sec
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11
Keep slight right to continue on I 81 South: Roanoke
1528 ft · 49 sec
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12
Keep slight left to continue on I 81 South: Roanoke
1972 ft · 48 sec
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13
Merge slight left onto Maryland Veterans Memorial Highway
1 km · 45 sec · Maryland Veterans Memorial Highway
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14
Take the exit slight right toward US 11: Williamsport
2161 ft · 53 sec
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15
Turn straight onto East Potomac Street
1.3 km · 1 min · East Potomac Street
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16
Arrive at your destination
0 m · 1 sec · East Potomac Street
Car Route Details
A richer read on the saved driving route between Gaithersburg and Williamsport.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 70 West
Merge slight right
26.9 mi · 00h 29m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Rain Showers Likely leaving Gaithersburg and Chance Rain Showers near Williamsport.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Gaithersburg to Williamsport?
The road trip is about 52 miles (83.7 km) and usually takes 01h 02m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Braddock Heights is a useful midpoint, sitting about 26 miles from Gaithersburg and 26 miles from Williamsport.
How much longer is the road route than the straight-line distance?
The direct path is about 45.7 miles (73.6 km), while the road route adds roughly 6.3 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 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 4:24 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.52 one way or $15.04 round trip. Estimated CO2 is about 16.4 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers Likely around Gaithersburg and Chance Rain Showers near Williamsport.
Stop Ideas Near Braddock Heights
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 Braddock Heights.
Frederick, MD
Frederick Airport, MD
Harpers Ferry
Hagerstown, MD
Flight Path Map
This map shows the direct air route between Gaithersburg and Williamsport. Straight-line distance: 45.73 mi (73.6 km).
#1 Gaithersburg
The second most populous city in Montgomery County, Maryland.
| Population | 67,741 |
| Coordinates | 39.1434400, -77.2013700 |
| Altitude | 153 |
| Country | United States |
#2 Williamsport
Town of the United States
| Population | 2,074 |
| Coordinates | 39.6006500, -77.8205500 |
| Altitude | 124 |
| Country | United States |
End: Williamsport (-77.82055, 39.60065)
Estimated Travel Time
Distance: 84 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 43m |
| 40 mph (64.37 km/h) | 01h 18m |
| 50 mph (80.47 km/h) | 01h 02m |
| 60 mph (96.56 km/h) | 00h 52m |
| 70 mph (112.65 km/h) | 00h 44m |
| 80 mph (129 km/h) | 00h 38m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $7.52 | $15.04 |
| Mid-grade | $4.60 | $8.46 | $16.92 |
| Premium | $4.95 | $9.12 | $18.23 |
| Diesel | $5.98 | $11.00 | $22.01 |
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 Maryland · Apr 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.