How far is Gaithersburg, MD from Gwynn Oak, MD?
The driving distance from Gaithersburg, MD to Gwynn Oak, MD is about 45 miles (72.4 km), with a travel time of about 00h 52m by car.
- The straight-line flight distance is about 30.2 miles (48.6 km).
- For a round trip, plan for roughly 01h 44m 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 00h 52m.
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 Montgomery County, Maryland, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Rain Showers
Slight Chance Rain Showers then Partly Sunny
Driving Route Map
The map below follows the saved road route between Gaithersburg and Gwynn Oak.
Turn-by-Turn Driving Directions
Step-by-step road directions between Gaithersburg and Gwynn Oak.
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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
12.8 mi · 16 min · Intercounty Connector
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8
Take the exit slight right toward US 29: Silver Spring, Columbia
1170 ft · 29 sec
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9
Keep slight left to continue on US 29 North: Columbia
2435 ft · 59 sec
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10
Merge slight left onto Columbia Pike
16.5 mi · 22 min · Columbia Pike
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11
Take the exit slight right toward I 70 East: Baltimore
1.1 km · 1 min
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12
Merge slight left
6 mi · 7 min
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13
Take the exit slight right toward Security Boulevard
1469 ft · 36 sec
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14
Turn straight onto Security Boulevard
916 ft · 22 sec · Security Boulevard
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15
Turn right onto North Forest Park Avenue
1.4 mi · 4 min · North Forest Park Avenue
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16
Turn slight left onto Hillsdale Road
1.5 km · 3 min · Hillsdale Road
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17
Turn right onto Haddon Avenue
54 m · 11 sec · Haddon Avenue
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18
Turn left
18 m · 4 sec
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19
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Gaithersburg and Gwynn Oak.
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.
Columbia Pike
Merge slight left onto Columbia Pike
16.5 mi · 00h 22m
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.
Chance Rain Showers leaving Gaithersburg and Slight Chance Rain Showers then Partly Sunny near Gwynn Oak.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Gaithersburg to Gwynn Oak?
The road trip is about 45 miles (72.4 km) and usually takes 00h 52m 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?
Burtonsville is a useful midpoint, sitting about 21.6 miles from Gaithersburg and 23.4 miles from Gwynn Oak.
How much longer is the road route than the straight-line distance?
The direct path is about 30.2 miles (48.6 km), while the road route adds roughly 14.8 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 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 4:46 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.50 one way or $12.99 round trip. Estimated CO2 is about 14.1 kg one way.
What should you check before leaving?
Before you leave, expect Chance Rain Showers around Gaithersburg and Slight Chance Rain Showers then Partly Sunny near Gwynn Oak.
Stop Ideas Near Burtonsville
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
City of Rockville City Hall
City of Rockville
Town Hall Liquor And Bar
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Burtonsville.
Rockville station
New Carrollton station
BWI Rail Station
Washington Union Station
Flight Path Map
This map shows the direct air route between Gaithersburg and Gwynn Oak. Straight-line distance: 30.19 mi (48.59 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 Gwynn Oak
A census-designated place in Baltimore County, Maryland.
| Population | 47,092 |
| Coordinates | 39.3326100, -76.6927500 |
| Altitude | 130 |
| Country | United States |
End: (-76.692724, 39.332601)
Estimated Travel Time
Distance: 72 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 29m |
| 40 mph (64.37 km/h) | 01h 07m |
| 50 mph (80.47 km/h) | 00h 54m |
| 60 mph (96.56 km/h) | 00h 45m |
| 70 mph (112.65 km/h) | 00h 38m |
| 80 mph (129 km/h) | 00h 33m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $6.50 | $12.99 |
| Mid-grade | $4.60 | $7.31 | $14.62 |
| Premium | $4.95 | $7.88 | $15.75 |
| Diesel | $5.98 | $9.51 | $19.02 |
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 · May 07, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.