How far is Selby-on-the-Bay, MD from Gaithersburg, MD?
The driving distance from Selby-on-the-Bay, MD to Gaithersburg, MD is about 53.3 miles (85.8 km), with a travel time of about 01h 04m by car.
- The straight-line flight distance is about 39.7 miles (63.9 km).
- For a round trip, plan for roughly 02h 08m 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 04m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
This departure sits inside the recommended comfort window for the route.
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.
Showers And Thunderstorms
Rain Showers Likely
Driving Route Map
The map below follows the saved road route between Selby-on-the-Bay and Gaithersburg.
Turn-by-Turn Driving Directions
Step-by-step road directions between Selby-on-the-Bay and Gaithersburg.
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1
Start on Edgemont Street
2436 ft · 2 min · Edgemont Street
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2
Turn right onto Hillside Avenue
2281 ft · 2 min · Hillside Avenue
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3
At the end of the road, turn right onto Central Avenue
6.4 mi · 11 min · Central Avenue
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4
Turn right onto Davidsonville Road
3.3 mi · 6 min · Davidsonville Road
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5
Take the ramp slight right toward US 50 West, US 301 South: Washington, Richmond
2824 ft · 1 min
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6
Merge slight left onto John Hanson Highway
10.4 mi · 12 min · John Hanson Highway
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7
Take the exit slight right toward I 95 North, I 495 North: Baltimore, Silver Spring
2347 ft · 57 sec
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8
Keep slight left to continue on I 495 North, I 95 North: Beltway
3221 ft · 1 min
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9
Merge slight left onto Capital Beltway
6.9 mi · 9 min · Capital Beltway
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10
Keep slight left to continue on Capital Beltway
9.5 mi · 12 min · Capital Beltway
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11
Keep slight right to continue on I 270 North: Frederick
3.6 mi · 5 min
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12
Keep slight left to continue on I 270 North
7 mi · 10 min
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13
Take the exit slight right toward MD 117, MD 124 North: Clopper Road, West Diamond Avenue, Montgomery Village Avenue, Quince Orchard Road, Watkins Mill Road
1052 ft · 16 sec
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14
Merge slight right
526 ft · 8 sec
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15
Take the exit slight right toward MD 117, MD 124 South: Clopper Road, West Diamond Avenue, Quince Orchard Road
1387 ft · 42 sec
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16
Turn left onto West Diamond Avenue
2537 ft · 51 sec · West Diamond Avenue
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17
Turn left onto Meem Avenue
616 ft · 29 sec · Meem Avenue
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18
Turn right onto Chestnut Street
1033 ft · 35 sec · Chestnut Street
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19
Turn right onto North Frederick Avenue
77 m · 7 sec · North Frederick Avenue
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20
Turn right
26 m · 6 sec
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21
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Selby-on-the-Bay and Gaithersburg.
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.
John Hanson Highway
Merge slight left onto John Hanson Highway
10.4 mi · 00h 12m
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.
Showers And Thunderstorms leaving Selby-on-the-Bay and Rain Showers Likely near Gaithersburg.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Selby-on-the-Bay to Gaithersburg?
The road trip is about 53.3 miles (85.8 km) and usually takes 01h 04m 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 25.5 miles from Selby-on-the-Bay and 27.8 miles from Gaithersburg.
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 13.6 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 4:22 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.68 one way or $15.36 round trip. Estimated CO2 is about 16.7 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms around Selby-on-the-Bay and Rain Showers Likely near Gaithersburg.
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 Selby-on-the-Bay and Gaithersburg. Straight-line distance: 39.67 mi (63.85 km).
#1 Selby-on-the-Bay
Census designated place
| Population | 4,040 |
| Coordinates | 38.9162200, -76.5224600 |
| Altitude | 4 |
| Country | United States |
#2 Gaithersburg
The second most populous city in Montgomery County, Maryland.
| Population | 67,741 |
| Coordinates | 39.1434400, -77.2013700 |
| Altitude | 153 |
| Country | United States |
End: (-77.201269, 39.143361)
Estimated Travel Time
Distance: 86 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 46m |
| 40 mph (64.37 km/h) | 01h 19m |
| 50 mph (80.47 km/h) | 01h 03m |
| 60 mph (96.56 km/h) | 00h 53m |
| 70 mph (112.65 km/h) | 00h 45m |
| 80 mph (129 km/h) | 00h 39m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $7.68 | $15.36 |
| Mid-grade | $4.60 | $8.65 | $17.29 |
| Premium | $4.95 | $9.31 | $18.63 |
| Diesel | $5.98 | $11.24 | $22.48 |
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.