How far is Gaithersburg, MD from Dundalk, MD?
The driving distance from Gaithersburg, MD to Dundalk, MD is about 48.1 miles (77.4 km), with a travel time of about 01h 05m by car.
- The straight-line flight distance is about 37.2 miles (59.9 km).
- For a round trip, plan for roughly 02h 11m 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 05m.
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.
Census-designated place in Howard 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 Gaithersburg and Dundalk.
Turn-by-Turn Driving Directions
Step-by-step road directions between Gaithersburg and Dundalk.
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1
Start on the route
26 m · 8 sec
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2
Turn right onto North Frederick Avenue
993 ft · 17 sec · North Frederick Avenue
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3
Continue on South Frederick Avenue
1.4 mi · 2 min · South Frederick Avenue
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4
Continue on Frederick Road
1906 ft · 43 sec · Frederick Road
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5
Turn left onto Shady Grove Road
1.1 mi · 3 min · Shady Grove Road
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6
Turn left onto MD 200 Toll East
2888 ft · 1 min
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7
Merge slight left onto Intercounty Connector
15.9 mi · 20 min · Intercounty Connector
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8
Take the exit slight right toward I 95: Laurel, Burtonsville
2257 ft · 51 sec
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9
Keep slight left to continue on MD 198: Konterra Drive
2986 ft · 39 sec
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10
Keep slight left to continue on MD 198: Laurel, Burtonsville
1.5 km · 1 min
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11
Keep slight left to continue on MD 198 West: Burtonsville
2970 ft · 39 sec
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12
Keep slight left
1.2 km · 50 sec
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13
Merge slight left
20.1 mi · 24 min
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14
Keep slight right
2.1 mi · 3 min
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15
Take the exit slight right
2192 ft · 55 sec
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16
Turn left onto Keith Avenue
1.2 km · 2 min · Keith Avenue
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17
Keep slight right to continue on Keith Avenue
1002 ft · 36 sec · Keith Avenue
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18
Turn straight onto Broening Highway
1.6 mi · 3 min · Broening Highway
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19
Turn left onto Belclare Road
149 m · 21 sec · Belclare Road
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20
Turn right onto Dundalk Avenue
575 ft · 20 sec · Dundalk Avenue
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21
Continue on Dundalk Avenue
87 m · 13 sec · Dundalk Avenue
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22
Arrive at your destination
0 m · 1 sec · Dundalk Avenue
Car Route Details
A richer read on the saved driving route between Gaithersburg and Dundalk.
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.
MD 198 West
Merge slight left
20.1 mi · 00h 24m
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 Gaithersburg and Sunny near Dundalk.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Gaithersburg to Dundalk?
The road trip is about 48.1 miles (77.4 km) and usually takes 01h 05m 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?
North Laurel is a useful midpoint, sitting about 24 miles from Gaithersburg and 24 miles from Dundalk.
How much longer is the road route than the straight-line distance?
The direct path is about 37.2 miles (59.9 km), while the road route adds roughly 10.9 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 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 4:18 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.95 one way or $13.89 round trip. Estimated CO2 is about 15.1 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Gaithersburg and Sunny near Dundalk.
Stop Ideas Near North Laurel
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 North Laurel.
BWI Rail Station
New Carrollton station
Rockville station
Washington Union Station
Flight Path Map
This map shows the direct air route between Gaithersburg and Dundalk. Straight-line distance: 37.2 mi (59.87 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 Dundalk
Census-designated place in Maryland, United States
| Population | 63,597 |
| Coordinates | 39.2506600, -76.5205200 |
| Altitude | 5 |
| Country | United States |
End: Dundalk (-76.52052, 39.25066)
Estimated Travel Time
Distance: 77 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 36m |
| 40 mph (64.37 km/h) | 01h 12m |
| 50 mph (80.47 km/h) | 00h 57m |
| 60 mph (96.56 km/h) | 00h 48m |
| 70 mph (112.65 km/h) | 00h 41m |
| 80 mph (129 km/h) | 00h 35m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $6.95 | $13.89 |
| Mid-grade | $4.60 | $7.82 | $15.64 |
| Premium | $4.95 | $8.42 | $16.84 |
| Diesel | $5.98 | $10.17 | $20.33 |
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.