How far is South Gate, MD from Gaithersburg, MD?
The driving distance from South Gate, MD to Gaithersburg, MD is about 42.1 miles (67.7 km), with a travel time of about 00h 48m by car.
- The straight-line flight distance is about 30.9 miles (49.7 km).
- For a round trip, plan for roughly 01h 36m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM EST.
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 48m.
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.
Census designated place
Route Weather Snapshot
Check the forecast at both ends before you head out.
Patchy Frost then Sunny
Driving Route Map
The map below follows the saved road route between South Gate and Gaithersburg.
Turn-by-Turn Driving Directions
Step-by-step road directions between South Gate and Gaithersburg.
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1
Start on Nolfield Drive
1448 ft · 2 min · Nolfield Drive
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2
At the end of the road, turn right onto Phirne Road
1.1 km · 3 min · Phirne Road
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3
Turn left onto Crain Highway South
2688 ft · 1 min · Crain Highway South
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4
Take the ramp straight toward I 97 North: Baltimore
1853 ft · 28 sec
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5
Merge slight left
1.6 km · 1 min
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6
Take the exit slight right toward MD 100: Ellicott City, Gibson Island
1350 ft · 33 sec
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7
Keep slight left to continue on MD 100 West: Ellicott City
1.3 km · 2 min
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8
Merge slight left onto Paul T. Pitcher Memorial Highway
7.3 mi · 10 min · Paul T. Pitcher Memorial Highway
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9
Take the exit slight right toward I 95: Baltimore, Washington
1420 ft · 27 sec
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10
Keep slight left to continue on I 95 South: Washington
1.2 km · 2 min
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11
Merge slight left
10.6 mi · 12 min
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12
Take the exit slight right toward MD 200 Toll West
1.5 km · 1 min
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13
Merge slight left onto Intercounty Connector
9.5 mi · 12 min · Intercounty Connector
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14
Continue on Intercounty Connector
6.2 mi · 8 min · Intercounty Connector
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15
Continue straight
2718 ft · 41 sec
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16
Take the exit slight right toward MD 355: Rockville, Gaithersburg
1906 ft · 47 sec
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17
Turn right onto Frederick Road
1160 ft · 27 sec · Frederick Road
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18
Continue on South Frederick Avenue
1.6 mi · 3 min · South Frederick Avenue
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19
Turn left
26 m · 6 sec
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20
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between South Gate 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.
I 95 South
Merge slight left
10.6 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.
Sunny leaving South Gate and Patchy Frost then Sunny near Gaithersburg.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from South Gate to Gaithersburg?
The road trip is about 42.1 miles (67.7 km) and usually takes 00h 48m 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?
West Laurel is a useful midpoint, sitting about 21 miles from South Gate and 21.1 miles from Gaithersburg.
How much longer is the road route than the straight-line distance?
The direct path is about 30.9 miles (49.7 km), while the road route adds roughly 11.2 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 EST. If you want a more comfortable same-day return, try to leave by 4:54 PM EST.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $5.81 one way or $11.61 round trip. Estimated CO2 is about 13.2 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around South Gate and Patchy Frost then Sunny near Gaithersburg.
Stop Ideas Near West Laurel
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
City of Rockville City Hall
City of Bowie
Town Hall Liquor And Bar
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to West Laurel.
New Carrollton station
BWI Rail Station
Rockville station
Washington Union Station
Flight Path Map
This map shows the direct air route between South Gate and Gaithersburg. Straight-line distance: 30.86 mi (49.67 km).
#1 South Gate
South Gate is a place in Maryland, United States.
| Population | 0 |
| Coordinates | 39.1290000, -76.6258000 |
| 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: 68 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 24m |
| 40 mph (64.37 km/h) | 01h 03m |
| 50 mph (80.47 km/h) | 00h 50m |
| 60 mph (96.56 km/h) | 00h 42m |
| 70 mph (112.65 km/h) | 00h 36m |
| 80 mph (129 km/h) | 00h 31m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.92 | $5.81 | $11.61 |
| Mid-grade | $4.55 | $6.73 | $13.47 |
| Premium | $4.87 | $7.21 | $14.41 |
| Diesel | $6.28 | $9.29 | $18.58 |
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 · Nov 09, 2026