How far is Rockville, MD from Clarksburg, MD?
The driving distance from Rockville, MD to Clarksburg, MD is about 13.6 miles (21.9 km), with a travel time of about 00h 20m by car.
- The straight-line flight distance is about 12.7 miles (20.4 km).
- For a round trip, plan for roughly 00h 41m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM EST.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 00h 20m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
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.
The second most populous city in Montgomery County, Maryland.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Clear
Driving Route Map
The map below follows the saved road route between Rockville and Clarksburg.
Turn-by-Turn Driving Directions
Step-by-step road directions between Rockville and Clarksburg.
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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
11.5 mi · 15 min
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7
Take the exit slight right toward MD 121: Boyds, Clarksburg
1246 ft · 30 sec
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8
Keep slight right to continue on MD 121 North: Clarksburg, Little Bennett Regional Park
800 ft · 19 sec
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9
Turn straight onto Clarksburg Road
149 m · 10 sec · Clarksburg Road
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10
Continue on Stringtown Road
1491 ft · 46 sec · Stringtown Road
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11
Turn left onto Frederick Road
641 ft · 20 sec · Frederick Road
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12
Arrive at your destination
0 m · 1 sec · Frederick Road
Car Route Details
A richer read on the saved driving route between Rockville and Clarksburg.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
I 270 North
Merge slight left onto I 270 North
11.5 mi · 00h 15m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Sunny leaving Rockville and Mostly Clear near Clarksburg.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Rockville to Clarksburg?
The road trip is about 13.6 miles (21.9 km) and usually takes 00h 20m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Gaithersburg is a useful midpoint, sitting about 6.8 miles from Rockville and 6.8 miles from Clarksburg.
How much longer is the road route than the straight-line distance?
The direct path is about 12.7 miles (20.4 km), while the road route adds roughly 0.9 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 7:00 AM to 7:00 PM EST. If you want a more comfortable same-day return, try to leave by 7:48 PM EST.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $1.89 one way or $3.79 round trip. Estimated CO2 is about 4.3 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Rockville and Mostly Clear near Clarksburg.
Stop Ideas Near Gaithersburg
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Griffith Park at City Hall
Gaithersburg City Hall
City of Rockville City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Gaithersburg.
Rockville station
Washington Union Station
Frederick Airport, MD
Frederick, MD
Flight Path Map
This map shows the direct air route between Rockville and Clarksburg. Straight-line distance: 12.66 mi (20.38 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 Clarksburg
Clarksburg is a place in Maryland, United States.
| Population | 0 |
| Coordinates | 39.2387200, -77.2794300 |
| Altitude | 202 |
| Country | United States |
End: Clarksburg (-77.27943, 39.23872)
Estimated Travel Time
Distance: 22 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 27m |
| 40 mph (64.37 km/h) | 00h 20m |
| 50 mph (80.47 km/h) | 00h 16m |
| 60 mph (96.56 km/h) | 00h 13m |
| 70 mph (112.65 km/h) | 00h 11m |
| 80 mph (129 km/h) | 00h 10m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.94 | $1.89 | $3.79 |
| Mid-grade | $4.56 | $2.19 | $4.38 |
| Premium | $4.88 | $2.34 | $4.69 |
| Diesel | $6.29 | $3.02 | $6.04 |
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 · Nov 07, 2026