How far is Rockville, MD from Williamsport, MD?
The driving distance from Rockville, MD to Williamsport, MD is about 56.9 miles (91.6 km), with a travel time of about 01h 10m by car.
- The straight-line flight distance is about 50.5 miles (81.2 km).
- For a round trip, plan for roughly 02h 20m 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 10m.
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.
Sunny
Driving Route Map
The map below follows the saved road route between Rockville and Williamsport.
Turn-by-Turn Driving Directions
Step-by-step road directions between Rockville and Williamsport.
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1
Start on South Washington Street
19 m · 9 sec · South Washington Street
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2
Turn left onto West Montgomery Avenue
1021 ft · 28 sec · West Montgomery Avenue
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3
Turn straight onto West Jefferson Street
89 m · 11 sec · West Jefferson Street
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4
Continue on West Montgomery Avenue
1.2 km · 2 min · West Montgomery Avenue
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5
Take the ramp slight right toward I 270 North: Frederick
1343 ft · 33 sec
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6
Merge slight left onto I 270 North
25.1 mi · 32 min
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7
Take the exit slight right toward I 70: Hagerstown, Baltimore
1986 ft · 31 sec
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8
Keep slight left to continue on I 70 West: Hagerstown
1899 ft · 29 sec
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9
Merge slight right
26.9 mi · 29 min
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10
Take the exit slight right toward I 81 North, I 81 South: Harrisburg, Roanoke
628 ft · 15 sec
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11
Keep slight left to continue on I 81 South: Roanoke
1401 ft · 34 sec
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12
Keep slight right to continue on I 81 South: Roanoke
1528 ft · 49 sec
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13
Keep slight left to continue on I 81 South: Roanoke
1972 ft · 48 sec
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14
Merge slight left onto Maryland Veterans Memorial Highway
1 km · 45 sec · Maryland Veterans Memorial Highway
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15
Take the exit slight right toward US 11: Williamsport
2161 ft · 53 sec
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16
Turn straight onto East Potomac Street
1.3 km · 1 min · East Potomac Street
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17
Arrive at your destination
0 m · 1 sec · East Potomac Street
Car Route Details
A richer read on the saved driving route between Rockville 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.
Sunny leaving Rockville and Sunny near Williamsport.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Rockville to Williamsport?
The road trip is about 56.9 miles (91.6 km) and usually takes 01h 10m 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?
Ballenger Creek is a useful midpoint, sitting about 28.5 miles from Rockville and 28.5 miles from Williamsport.
How much longer is the road route than the straight-line distance?
The direct path is about 50.5 miles (81.2 km), while the road route adds roughly 6.4 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 4:10 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $8.21 one way or $16.43 round trip. Estimated CO2 is about 17.9 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Rockville and Sunny near Williamsport.
Stop Ideas Near Ballenger Creek
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 Ballenger Creek.
Frederick, MD
Frederick Airport, MD
Harpers Ferry
Hagerstown, MD
Flight Path Map
This map shows the direct air route between Rockville and Williamsport. Straight-line distance: 50.47 mi (81.23 km).
#1 Rockville
The most populous city in Montgomery County, Maryland.
| Population | 69,512 |
| Coordinates | 39.0840000, -77.1527600 |
| Altitude | 137 |
| 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: 92 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 53m |
| 40 mph (64.37 km/h) | 01h 25m |
| 50 mph (80.47 km/h) | 01h 08m |
| 60 mph (96.56 km/h) | 00h 56m |
| 70 mph (112.65 km/h) | 00h 48m |
| 80 mph (129 km/h) | 00h 42m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $8.21 | $16.43 |
| Mid-grade | $4.60 | $9.24 | $18.49 |
| Premium | $4.95 | $9.96 | $19.92 |
| Diesel | $5.98 | $12.02 | $24.04 |
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 · Jun 03, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.