How far is Ocean City, MD from Gaithersburg, MD?
The driving distance from Ocean City, MD to Gaithersburg, MD is about 166.2 miles (267.5 km), with a travel time of about 02h 54m by car.
- The straight-line flight distance is about 126.9 miles (204.3 km).
- For a round trip, plan for roughly 05h 49m 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 02h 54m.
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.
Town in Maryland, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Ocean City and Gaithersburg.
Turn-by-Turn Driving Directions
Step-by-step road directions between Ocean City and Gaithersburg.
-
1
Start on Philadelphia Avenue
1485 ft · 46 sec · Philadelphia Avenue
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2
Continue straight
5.9 mi · 10 min
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3
Take the exit slight right
47 m · 4 sec
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4
Turn straight onto Friendship Road
1.6 mi · 3 min · Friendship Road
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5
Turn right onto Worcester Highway
1.9 mi · 3 min · Worcester Highway
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6
Take the ramp straight
1201 ft · 33 sec
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7
Merge slight left onto Worcester Highway
4.3 mi · 6 min · Worcester Highway
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8
Continue on Dupont Boulevard
20 mi · 29 min · Dupont Boulevard
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9
Turn left onto Seashore Highway
10.9 mi · 17 min · Seashore Highway
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10
Turn right onto Sussex Highway
2544 ft · 43 sec · Sussex Highway
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11
Take the exit slight left
51 m · 5 sec
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12
Continue on Rifle Range Road
673 ft · 19 sec · Rifle Range Road
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13
Turn right onto South Main Street
1 mi · 2 min · South Main Street
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14
Turn left onto Market Street
2366 ft · 48 sec · Market Street
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15
Turn right onto Seashore Highway
7.5 mi · 9 min · Seashore Highway
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16
Continue on Shore Highway
17.4 mi · 24 min · Shore Highway
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17
Continue on Queen Anne Highway
6.2 mi · 8 min · Queen Anne Highway
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18
Take the exit slight right
527 ft · 15 sec
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19
Merge slight left onto Ocean Gateway
28.5 mi · 40 min · Ocean Gateway
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20
Continue on John Hanson Highway
18.4 mi · 22 min · John Hanson Highway
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21
Take the exit slight right toward I 95 North, I 495 North: Baltimore, Silver Spring
2347 ft · 57 sec
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22
Keep slight left to continue on I 495 North, I 95 North: Beltway
3221 ft · 1 min
-
23
Merge slight left onto Capital Beltway
6.9 mi · 9 min · Capital Beltway
-
24
Keep slight left to continue on Capital Beltway
9.5 mi · 12 min · Capital Beltway
-
25
Keep slight right to continue on I 270 North: Frederick
3.6 mi · 5 min
-
26
Keep slight left to continue on I 270 North
7 mi · 10 min
-
27
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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28
Merge slight right
526 ft · 8 sec
-
29
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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30
Turn left onto West Diamond Avenue
2537 ft · 51 sec · West Diamond Avenue
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31
Turn left onto Meem Avenue
616 ft · 29 sec · Meem Avenue
-
32
Turn right onto Chestnut Street
1033 ft · 35 sec · Chestnut Street
-
33
Turn right onto North Frederick Avenue
77 m · 7 sec · North Frederick Avenue
-
34
Turn right
26 m · 6 sec
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35
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Ocean City and Gaithersburg.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
Ocean Gateway
Merge slight left onto Ocean Gateway
28.5 mi · 00h 40m
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.
Sunny leaving Ocean City and Sunny near Gaithersburg.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Ocean City to Gaithersburg?
The road trip is about 166.2 miles (267.5 km) and usually takes 02h 54m 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?
Hillsboro is a useful midpoint, sitting about 77.3 miles from Ocean City and 88.9 miles from Gaithersburg.
How much longer is the road route than the straight-line distance?
The direct path is about 126.9 miles (204.3 km), while the road route adds roughly 39.3 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 12:40 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $23.94 one way or $47.89 round trip. Estimated CO2 is about 52.1 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Ocean City and Sunny near Gaithersburg.
Stop Ideas Near Hillsboro
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Hillsboro.
Easton Airport, Maryland
Kent Island, MD
Cambridge, Maryland
Dover, Delaware
Flight Path Map
This map shows the direct air route between Ocean City and Gaithersburg. Straight-line distance: 126.95 mi (204.31 km).
#1 Ocean City
Town in Worcester County, Maryland, United States
| Population | 6,913 |
| Coordinates | 38.3365000, -75.0849100 |
| Altitude | 1 |
| 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: 267 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 32m |
| 40 mph (64.37 km/h) | 04h 09m |
| 50 mph (80.47 km/h) | 03h 19m |
| 60 mph (96.56 km/h) | 02h 46m |
| 70 mph (112.65 km/h) | 02h 22m |
| 80 mph (129 km/h) | 02h 04m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $23.94 | $47.89 |
| Mid-grade | $4.60 | $26.95 | $53.90 |
| Premium | $4.95 | $29.03 | $58.06 |
| Diesel | $5.98 | $35.04 | $70.09 |
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 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.