How far is White Marsh, MD from Gaithersburg, MD?
The driving distance from White Marsh, MD to Gaithersburg, MD is about 55.5 miles (89.3 km), with a travel time of about 00h 58m by car.
- The straight-line flight distance is about 44.4 miles (71.4 km).
- For a round trip, plan for roughly 01h 56m 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 58m.
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.
Locality in Howard and Anne Arundel counties, Maryland, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers
Rain Showers Likely
Driving Route Map
The map below follows the saved road route between White Marsh and Gaithersburg.
Turn-by-Turn Driving Directions
Step-by-step road directions between White Marsh and Gaithersburg.
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1
Start on Philadelphia Road
2458 ft · 60 sec · Philadelphia Road
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2
Take the ramp left toward MD 43 West
1164 ft · 32 sec
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3
Merge slight left onto White Marsh Boulevard
1 km · 1 min · White Marsh Boulevard
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4
Turn left onto I 95 Toll South
2359 ft · 34 sec
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5
Merge slight right onto Express Toll Lanes
5.1 mi · 6 min · Express Toll Lanes
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6
Keep slight left to continue on Express Toll Lanes
1.2 mi · 2 min · Express Toll Lanes
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7
Merge slight right onto Harbor Tunnel Thruway
3.8 mi · 5 min · Harbor Tunnel Thruway
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8
Continue on Baltimore Harbor Tunnel
1.4 mi · 2 min · Baltimore Harbor Tunnel
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9
Continue on Harbor Tunnel Thruway
2.2 mi · 3 min · Harbor Tunnel Thruway
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10
Continue on Harbor Tunnel Throughway
2567 ft · 40 sec · Harbor Tunnel Throughway
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11
Keep slight left to continue on Harbor Tunnel Throughway
2671 ft · 42 sec · Harbor Tunnel Throughway
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12
Continue on Harbor Tunnel Thruway
6 mi · 7 min · Harbor Tunnel Thruway
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13
Merge slight left
13.6 mi · 16 min
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14
Take the exit slight right toward MD 200 Toll West
1.5 km · 1 min
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15
Merge slight left onto Intercounty Connector
9.5 mi · 12 min · Intercounty Connector
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16
Continue on Intercounty Connector
6.2 mi · 8 min · Intercounty Connector
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17
Continue straight
2718 ft · 41 sec
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18
Take the exit slight right toward MD 355: Rockville, Gaithersburg
1906 ft · 47 sec
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19
Turn right onto Frederick Road
1160 ft · 27 sec · Frederick Road
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20
Continue on South Frederick Avenue
1.6 mi · 3 min · South Frederick Avenue
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21
Turn left
26 m · 6 sec
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22
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between White Marsh 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.
Harbor Tunnel Thruway
Merge slight left
13.6 mi · 00h 16m
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 leaving White Marsh 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 White Marsh to Gaithersburg?
The road trip is about 55.5 miles (89.3 km) and usually takes 00h 58m 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?
Jessup is a useful midpoint, sitting about 27.7 miles from White Marsh and 27.8 miles from Gaithersburg.
How much longer is the road route than the straight-line distance?
The direct path is about 44.4 miles (71.4 km), while the road route adds roughly 11.1 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 4:34 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $8.01 one way or $16.02 round trip. Estimated CO2 is about 17.4 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers around White Marsh and Rain Showers Likely near Gaithersburg.
Stop Ideas Near Jessup
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
City of Bowie
Baltimore City Hall
Town Hall Liquor And Bar
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Jessup.
BWI Rail Station
Pennsylvania Station
New Carrollton station
Rockville station
Flight Path Map
This map shows the direct air route between White Marsh and Gaithersburg. Straight-line distance: 44.37 mi (71.41 km).
#1 White Marsh
Community in Baltimore County Maryland
| Population | 9,513 |
| Coordinates | 39.3837200, -76.4321800 |
| Altitude | 16 |
| 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: 89 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 50m |
| 40 mph (64.37 km/h) | 01h 23m |
| 50 mph (80.47 km/h) | 01h 06m |
| 60 mph (96.56 km/h) | 00h 55m |
| 70 mph (112.65 km/h) | 00h 47m |
| 80 mph (129 km/h) | 00h 41m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $8.01 | $16.02 |
| Mid-grade | $4.60 | $9.01 | $18.03 |
| Premium | $4.95 | $9.71 | $19.42 |
| Diesel | $5.98 | $11.72 | $23.44 |
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.