How far is Gaithersburg, MD from Brentwood, MD?
The driving distance from Gaithersburg, MD to Brentwood, MD is about 27.4 miles (44.1 km), with a travel time of about 00h 37m by car.
- The straight-line flight distance is about 22.6 miles (36.3 km).
- For a round trip, plan for roughly 01h 14m 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 37m.
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.
Town in Frederick County, Maryland, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers Likely
Rain Showers
Driving Route Map
The map below follows the saved road route between Gaithersburg and Brentwood.
Turn-by-Turn Driving Directions
Step-by-step road directions between Gaithersburg and Brentwood.
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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
2867 ft · 38 sec
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9
Take the exit slight right toward US 340 West, US 15 South: Charles Town, Leesburg
1716 ft · 27 sec
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10
Keep slight left to continue on US 15 South, US 340 West: Charles Town, Leesburg
1802 ft · 35 sec
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11
Merge slight left onto Jefferson National Pike
2 mi · 2 min · Jefferson National Pike
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12
Take the exit slight right toward Mount Zion Road
1232 ft · 30 sec
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13
Keep slight right to continue on Mount Zion Road
48 m · 5 sec
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14
Turn straight onto Mount Zion Road
2167 ft · 43 sec · Mount Zion Road
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15
Enter the roundabout and take exit 3 toward Jefferson Pike
66 m · 5 sec · Jefferson Pike
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16
Exit the roundabout onto Jefferson Pike
1.2 km · 1 min · Jefferson Pike
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17
Turn right onto Teen Barnes Road
1697 ft · 49 sec · Teen Barnes Road
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18
Turn right onto Woodhill Way
145 m · 23 sec · Woodhill Way
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19
Turn right onto Woodhirst Drive
786 ft · 35 sec · Woodhirst Drive
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20
Arrive at your destination
0 m · 1 sec · Woodhirst Drive
Car Route Details
A richer read on the saved driving route between Gaithersburg and Brentwood.
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
20.2 mi · 00h 25m
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.
Rain Showers Likely leaving Gaithersburg and Rain Showers near Brentwood.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Gaithersburg to Brentwood?
The road trip is about 27.4 miles (44.1 km) and usually takes 00h 37m 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?
Green Valley is a useful midpoint, sitting about 13.7 miles from Gaithersburg and 13.7 miles from Brentwood.
How much longer is the road route than the straight-line distance?
The direct path is about 22.6 miles (36.3 km), while the road route adds roughly 4.8 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 7:16 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.96 one way or $7.93 round trip. Estimated CO2 is about 8.6 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers Likely around Gaithersburg and Rain Showers near Brentwood.
Stop Ideas Near Green Valley
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Griffith Park at City Hall
Gaithersburg City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Green Valley.
Frederick Airport, MD
Frederick, MD
Rockville station
Harpers Ferry
Flight Path Map
This map shows the direct air route between Gaithersburg and Brentwood. Straight-line distance: 22.55 mi (36.29 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 Brentwood
Town in Maryland
| Population | 3,439 |
| Coordinates | 39.3792700, -77.4927600 |
| Altitude | 158 |
| Country | United States |
End: Brentwood (-77.49276, 39.37927)
Estimated Travel Time
Distance: 44 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 54m |
| 40 mph (64.37 km/h) | 00h 41m |
| 50 mph (80.47 km/h) | 00h 32m |
| 60 mph (96.56 km/h) | 00h 27m |
| 70 mph (112.65 km/h) | 00h 23m |
| 80 mph (129 km/h) | 00h 20m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $3.96 | $7.93 |
| Mid-grade | $4.60 | $4.46 | $8.92 |
| Premium | $4.95 | $4.81 | $9.61 |
| Diesel | $5.98 | $5.80 | $11.60 |
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.