How far is Gaithersburg, MD from Selby-on-the-Bay, MD?
The driving distance from Gaithersburg, MD to Selby-on-the-Bay, MD is about 50.6 miles (81.4 km), with a travel time of about 01h 14m by car.
- The straight-line flight distance is about 39.7 miles (63.9 km).
- For a round trip, plan for roughly 02h 28m 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 14m.
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.
City in Prince George's County, Maryland, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers Likely
Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Gaithersburg and Selby-on-the-Bay.
Turn-by-Turn Driving Directions
Step-by-step road directions between Gaithersburg and Selby-on-the-Bay.
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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
16.3 mi · 21 min · Capital Beltway
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10
Take the exit slight right toward US 50 East: Annapolis
1 mi · 2 min
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11
Merge slight left onto John Hanson Highway
10.4 mi · 12 min · John Hanson Highway
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12
Take the exit slight right toward MD 424: Davidsonville, Crofton
2824 ft · 1 min
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13
Keep slight right to continue on MD 424 South: Davidsonville Road, Davidsonville
1273 ft · 31 sec
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14
Turn straight onto Davidsonville Road
3 mi · 6 min · Davidsonville Road
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15
Turn left onto Central Avenue
6.4 mi · 11 min · Central Avenue
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16
Turn left onto Hillside Avenue
2281 ft · 2 min · Hillside Avenue
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17
Turn left onto Edgemont Street
2436 ft · 2 min · Edgemont Street
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18
Arrive at your destination
0 m · 1 sec · Edgemont Street
Car Route Details
A richer read on the saved driving route between Gaithersburg and Selby-on-the-Bay.
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
Merge slight right onto Capital Beltway
16.3 mi · 00h 21m
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.
Rain Showers Likely leaving Gaithersburg and Showers And Thunderstorms near Selby-on-the-Bay.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Gaithersburg to Selby-on-the-Bay?
The road trip is about 50.6 miles (81.4 km) and usually takes 01h 14m 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?
Greenbelt is a useful midpoint, sitting about 25.3 miles from Gaithersburg and 25.3 miles from Selby-on-the-Bay.
How much longer is the road route than the straight-line distance?
The direct path is about 39.7 miles (63.9 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 4:02 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.31 one way or $14.63 round trip. Estimated CO2 is about 15.9 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers Likely around Gaithersburg and Showers And Thunderstorms near Selby-on-the-Bay.
Stop Ideas Near Greenbelt
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 Greenbelt.
New Carrollton station
Washington Union Station
Rockville station
BWI Rail Station
Flight Path Map
This map shows the direct air route between Gaithersburg and Selby-on-the-Bay. Straight-line distance: 39.67 mi (63.85 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 Selby-on-the-Bay
Census designated place
| Population | 4,040 |
| Coordinates | 38.9162200, -76.5224600 |
| Altitude | 4 |
| Country | United States |
End: Selby-on-the-Bay (-76.52246, 38.91622)
Estimated Travel Time
Distance: 81 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 41m |
| 40 mph (64.37 km/h) | 01h 15m |
| 50 mph (80.47 km/h) | 01h 00m |
| 60 mph (96.56 km/h) | 00h 50m |
| 70 mph (112.65 km/h) | 00h 43m |
| 80 mph (129 km/h) | 00h 37m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $7.31 | $14.63 |
| Mid-grade | $4.60 | $8.23 | $16.46 |
| Premium | $4.95 | $8.87 | $17.74 |
| Diesel | $5.98 | $10.70 | $21.41 |
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.