How far is Gaithersburg, MD from Smithsburg, MD?
The driving distance from Gaithersburg, MD to Smithsburg, MD is about 47 miles (75.6 km), with a travel time of about 00h 59m by car.
- The straight-line flight distance is about 40.5 miles (65.2 km).
- For a round trip, plan for roughly 01h 58m 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 59m.
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.
The second most populous city in Frederick County, Maryland.
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 Gaithersburg and Smithsburg.
Turn-by-Turn Driving Directions
Step-by-step road directions between Gaithersburg and Smithsburg.
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1
Start on the route
26 m · 12 sec
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2
Turn left onto North Frederick Avenue
1.4 km · 1 min · North Frederick Avenue
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3
Turn left onto Quince Orchard Road
1131 ft · 28 sec · Quince Orchard Road
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4
Take the ramp slight right toward I 270 North
1199 ft · 29 sec
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5
Merge slight left
20.2 mi · 25 min
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6
Take the exit slight right toward I 70: Hagerstown, Baltimore
1986 ft · 31 sec
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7
Keep slight left to continue on I 70 West: Hagerstown
1899 ft · 29 sec
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8
Merge slight right
18.4 mi · 20 min
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9
Take the exit slight right toward MD 66: Boonsboro, Smithsburg
1281 ft · 31 sec
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10
Turn right onto Mapleville Road
1.4 mi · 2 min · Mapleville Road
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11
Enter the roundabout and take exit 2 toward Mapleville Road
47 m · 3 sec · Mapleville Road
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12
Exit the roundabout onto Mapleville Road
4.1 mi · 7 min · Mapleville Road
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13
Continue on West Water Street
1 km · 1 min · West Water Street
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14
Arrive at your destination
0 m · 1 sec · East Water Street
Car Route Details
A richer read on the saved driving route between Gaithersburg and Smithsburg.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 270 North
Merge slight left
20.2 mi · 00h 25m
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 Gaithersburg and Sunny near Smithsburg.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Gaithersburg to Smithsburg?
The road trip is about 47 miles (75.6 km) and usually takes 00h 59m 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?
Frederick is a useful midpoint, sitting about 23.5 miles from Gaithersburg and 23.5 miles from Smithsburg.
How much longer is the road route than the straight-line distance?
The direct path is about 40.5 miles (65.2 km), while the road route adds roughly 6.5 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 4:32 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.78 one way or $13.57 round trip. Estimated CO2 is about 14.8 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Gaithersburg and Sunny near Smithsburg.
Stop Ideas Near Frederick
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 Frederick.
Frederick, MD
Frederick Airport, MD
Harpers Ferry
Hagerstown, MD
Flight Path Map
This map shows the direct air route between Gaithersburg and Smithsburg. Straight-line distance: 40.52 mi (65.21 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 Smithsburg
Town of the United States
| Population | 2,969 |
| Coordinates | 39.6548200, -77.5727700 |
| Altitude | 235 |
| Country | United States |
End: Smithsburg (-77.57277, 39.65482)
Estimated Travel Time
Distance: 76 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 33m |
| 40 mph (64.37 km/h) | 01h 10m |
| 50 mph (80.47 km/h) | 00h 56m |
| 60 mph (96.56 km/h) | 00h 46m |
| 70 mph (112.65 km/h) | 00h 40m |
| 80 mph (129 km/h) | 00h 35m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $6.78 | $13.57 |
| Mid-grade | $4.60 | $7.63 | $15.27 |
| Premium | $4.95 | $8.22 | $16.45 |
| Diesel | $5.98 | $9.93 | $19.85 |
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.