How far is New Carrollton, MD from Gaithersburg, MD?
The driving distance from New Carrollton, MD to Gaithersburg, MD is about 31.7 miles (51 km), with a travel time of about 00h 38m by car.
- The straight-line flight distance is about 21 miles (33.8 km).
- For a round trip, plan for roughly 01h 16m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM EDT.
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 38m.
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.
Unincorporated area in Montgomery County, Maryland, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Sunny
Driving Route Map
The map below follows the saved road route between New Carrollton and Gaithersburg.
Turn-by-Turn Driving Directions
Step-by-step road directions between New Carrollton and Gaithersburg.
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1
Start on Carrollton Parkway
33 m · 12 sec · Carrollton Parkway
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2
Turn left onto Lamont Drive
1 km · 2 min · Lamont Drive
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3
At the end of the road, turn left onto Riverdale Road
1.1 km · 1 min · Riverdale Road
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4
Turn left onto Annapolis Road
2701 ft · 56 sec · Annapolis Road
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5
Take the ramp slight left
1779 ft · 46 sec
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6
Merge slight left onto Capital Beltway
6.1 mi · 8 min · Capital Beltway
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7
Keep slight left to continue on Capital Beltway
9.5 mi · 12 min · Capital Beltway
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8
Keep slight right to continue on I 270 North: Frederick
3.6 mi · 5 min
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9
Keep slight right to continue on I 270 North
7.3 mi · 10 min
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10
Take the exit slight right toward MD 117, MD 124 South: Clopper Road, West Diamond Avenue, Quince Orchard Road
1387 ft · 42 sec
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11
Turn left onto West Diamond Avenue
2537 ft · 51 sec · West Diamond Avenue
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12
Turn left onto Meem Avenue
616 ft · 29 sec · Meem Avenue
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13
Turn right onto Chestnut Street
1033 ft · 35 sec · Chestnut Street
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14
Turn right onto North Frederick Avenue
77 m · 7 sec · North Frederick Avenue
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15
Turn right
26 m · 6 sec
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16
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between New Carrollton and Gaithersburg.
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.
Capital Beltway
Keep slight left to continue on Capital Beltway
9.52 mi · 00h 12m
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 New Carrollton and Sunny near Gaithersburg.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from New Carrollton to Gaithersburg?
The road trip is about 31.7 miles (51 km) and usually takes 00h 38m 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?
Forest Glen is a useful midpoint, sitting about 14.9 miles from New Carrollton and 16.8 miles from Gaithersburg.
How much longer is the road route than the straight-line distance?
The direct path is about 21 miles (33.8 km), while the road route adds roughly 10.7 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 EDT. If you want a more comfortable same-day return, try to leave by 7:14 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.58 one way or $9.15 round trip. Estimated CO2 is about 10 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around New Carrollton and Sunny near Gaithersburg.
Stop Ideas Near Forest Glen
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
United States Capitol
D C Government
THEARC: Town Hall Education Arts Recreation Campus
Town Hall Liquor And Bar
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Forest Glen.
Rockville station
Washington Union Station
New Carrollton station
Union Station
Flight Path Map
This map shows the direct air route between New Carrollton and Gaithersburg. Straight-line distance: 21.01 mi (33.81 km).
#1 New Carrollton
City in Prince George’s County, Maryland, United States
| Population | 12,909 |
| Coordinates | 38.9698300, -76.8799700 |
| Altitude | 23 |
| Country | United States |
#2 Gaithersburg
The second most populous city in Montgomery County, Maryland.
| Population | 67,741 |
| Coordinates | 39.1434400, -77.2013700 |
| Altitude | 153 |
| Country | United States |
End: (-77.201269, 39.143361)
Estimated Travel Time
Distance: 51 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 03m |
| 40 mph (64.37 km/h) | 00h 47m |
| 50 mph (80.47 km/h) | 00h 38m |
| 60 mph (96.56 km/h) | 00h 31m |
| 70 mph (112.65 km/h) | 00h 27m |
| 80 mph (129 km/h) | 00h 23m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $4.58 | $9.15 |
| Mid-grade | $4.60 | $5.15 | $10.30 |
| Premium | $4.95 | $5.55 | $11.10 |
| Diesel | $5.98 | $6.70 | $13.40 |
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 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.