How far is Gaithersburg, MD from Forest Glen, MD?
The driving distance from Gaithersburg, MD to Forest Glen, MD is about 16.8 miles (27.1 km), with a travel time of about 00h 25m by car.
- The straight-line flight distance is about 11.9 miles (19.1 km).
- For a round trip, plan for roughly 00h 51m 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 25m.
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.
A census-designated place in Montgomery County, Maryland.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers Likely
Rain Showers Likely
Driving Route Map
The map below follows the saved road route between Gaithersburg and Forest Glen.
Turn-by-Turn Driving Directions
Step-by-step road directions between Gaithersburg and Forest Glen.
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1
Start on the route
26 m · 12 sec
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2
Turn left onto North Frederick Avenue
77 m · 12 sec · North Frederick Avenue
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3
Turn left onto Chestnut Street
1664 ft · 50 sec · Chestnut Street
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4
Turn right onto West Diamond Avenue
2663 ft · 1 min · West Diamond Avenue
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5
Take the ramp left toward I 270 South: Washington
1531 ft · 39 sec
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6
Merge slight left onto Eisenhower Memorial Highway
1.4 mi · 2 min · Eisenhower Memorial Highway
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7
Keep slight left
6.6 mi · 9 min
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8
Keep slight left to continue on I 270 South: Silver Spring, College Park
2.8 mi · 4 min
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9
Merge slight right onto Capital Beltway
3.9 mi · 5 min · Capital Beltway
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10
Take the exit slight right toward MD 97 North: Wheaton
797 ft · 20 sec
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11
Turn slight right onto Georgia Avenue
929 ft · 30 sec · Georgia Avenue
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12
Turn left onto Forest Glen Road
1.1 km · 2 min · Forest Glen Road
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13
Turn sharp left onto Seminary Road
27 m · 2 sec · Seminary Road
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14
Arrive at your destination
0 m · 1 sec · Seminary Road
Car Route Details
A richer read on the saved driving route between Gaithersburg and Forest Glen.
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.
Eisenhower Memorial Highway
Keep slight left
6.61 mi · 00h 09m
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 Likely near Forest Glen.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Gaithersburg to Forest Glen?
The road trip is about 16.8 miles (27.1 km) and usually takes 00h 25m 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?
North Bethesda is a useful midpoint, sitting about 8.5 miles from Gaithersburg and 8.5 miles from Forest Glen.
How much longer is the road route than the straight-line distance?
The direct path is about 11.9 miles (19.1 km), while the road route adds roughly 4.9 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 EDT. If you want a more comfortable same-day return, try to leave by 7:38 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $2.41 one way or $4.82 round trip. Estimated CO2 is about 5.2 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers Likely around Gaithersburg and Rain Showers Likely near Forest Glen.
Stop Ideas Near North Bethesda
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
United States Capitol
D C Government
The John Wilson Building
Town Hall Liquor And Bar
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to North Bethesda.
Rockville station
Washington Union Station
New Carrollton station
Union Station
Flight Path Map
This map shows the direct air route between Gaithersburg and Forest Glen. Straight-line distance: 11.88 mi (19.12 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 Forest Glen
Unincorporated area in Montgomery County, Maryland, United States
| Population | 6,582 |
| Coordinates | 39.0145500, -77.0547000 |
| Altitude | 96 |
| Country | United States |
End: Forest Glen (-77.0547, 39.01455)
Estimated Travel Time
Distance: 27 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 33m |
| 40 mph (64.37 km/h) | 00h 25m |
| 50 mph (80.47 km/h) | 00h 20m |
| 60 mph (96.56 km/h) | 00h 16m |
| 70 mph (112.65 km/h) | 00h 14m |
| 80 mph (129 km/h) | 00h 12m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $2.41 | $4.82 |
| Mid-grade | $4.60 | $2.71 | $5.43 |
| Premium | $4.95 | $2.92 | $5.85 |
| Diesel | $5.98 | $3.53 | $7.06 |
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.