How far is Delmar, MD from Gaithersburg, MD?
The driving distance from Delmar, MD to Gaithersburg, MD is about 135.6 miles (218.3 km), with a travel time of about 02h 25m by car.
- The straight-line flight distance is about 99.5 miles (160.1 km).
- For a round trip, plan for roughly 04h 50m 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 25m.
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.
Sunny
Driving Route Map
The map below follows the saved road route between Delmar and Gaithersburg.
Turn-by-Turn Driving Directions
Step-by-step road directions between Delmar and Gaithersburg.
-
1
Start on East State Street
1 mi · 3 min · East State Street
-
2
Turn left onto Sussex Highway
19.3 mi · 27 min · Sussex Highway
-
3
Take the exit slight left
51 m · 6 sec
-
4
Continue on Rifle Range Road
673 ft · 19 sec · Rifle Range Road
-
5
Turn right onto South Main Street
1 mi · 2 min · South Main Street
-
6
Turn left onto Market Street
2366 ft · 46 sec · Market Street
-
7
Turn right onto Seashore Highway
7.5 mi · 9 min · Seashore Highway
-
8
Continue on Shore Highway
17.4 mi · 24 min · Shore Highway
-
9
Continue on Queen Anne Highway
6.2 mi · 8 min · Queen Anne Highway
-
10
Take the exit slight right
527 ft · 15 sec
-
11
Merge slight left onto Ocean Gateway
28.5 mi · 40 min · Ocean Gateway
-
12
Continue on John Hanson Highway
18.4 mi · 22 min · John Hanson Highway
-
13
Take the exit slight right toward I 95 North, I 495 North: Baltimore, Silver Spring
2347 ft · 57 sec
-
14
Keep slight left to continue on I 495 North, I 95 North: Beltway
3221 ft · 1 min
-
15
Merge slight left onto Capital Beltway
6.9 mi · 9 min · Capital Beltway
-
16
Keep slight left to continue on Capital Beltway
9.5 mi · 12 min · Capital Beltway
-
17
Keep slight right to continue on I 270 North: Frederick
3.6 mi · 5 min
-
18
Keep slight right to continue on I 270 North
7.3 mi · 10 min
-
19
Take the exit slight right toward MD 117, MD 124 South: Clopper Road, West Diamond Avenue, Quince Orchard Road
1387 ft · 42 sec
-
20
Turn left onto West Diamond Avenue
2537 ft · 51 sec · West Diamond Avenue
-
21
Turn left onto Meem Avenue
616 ft · 29 sec · Meem Avenue
-
22
Turn right onto Chestnut Street
1033 ft · 35 sec · Chestnut Street
-
23
Turn right onto North Frederick Avenue
77 m · 7 sec · North Frederick Avenue
-
24
Turn right
26 m · 6 sec
-
25
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Delmar and Gaithersburg.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
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 Delmar and Sunny near Gaithersburg.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Delmar to Gaithersburg?
The road trip is about 135.6 miles (218.3 km) and usually takes 02h 25m 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?
Grasonville is a useful midpoint, sitting about 64.7 miles from Delmar and 70.9 miles from Gaithersburg.
How much longer is the road route than the straight-line distance?
The direct path is about 99.5 miles (160.1 km), while the road route adds roughly 36.1 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 1:40 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $19.57 one way or $39.14 round trip. Estimated CO2 is about 42.6 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Delmar and Sunny near Gaithersburg.
Stop Ideas Near Grasonville
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 Grasonville.
Kent Island, MD
Easton Airport, Maryland
Cambridge, Maryland
BWI Rail Station
Flight Path Map
This map shows the direct air route between Delmar and Gaithersburg. Straight-line distance: 99.51 mi (160.15 km).
#1 Delmar
Town in Wicomico County, Maryland, United States
| Population | 3,596 |
| Coordinates | 38.4559496, -75.5774249 |
| Altitude | 15 |
| 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: 218 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 31m |
| 40 mph (64.37 km/h) | 03h 23m |
| 50 mph (80.47 km/h) | 02h 42m |
| 60 mph (96.56 km/h) | 02h 15m |
| 70 mph (112.65 km/h) | 01h 56m |
| 80 mph (129 km/h) | 01h 41m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $19.57 | $39.14 |
| Mid-grade | $4.60 | $22.03 | $44.06 |
| Premium | $4.95 | $23.73 | $47.46 |
| Diesel | $5.98 | $28.64 | $57.29 |
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 · May 04, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.