How far is Glassmanor, MD from Rockville, MD?
The driving distance from Glassmanor, MD to Rockville, MD is about 35.2 miles (56.6 km), with a travel time of about 00h 43m by car.
- The straight-line flight distance is about 20.1 miles (32.3 km).
- For a round trip, plan for roughly 01h 27m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM EST.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 43m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
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.
Unincorporated area in Montgomery County, Maryland, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Scattered Rain Showers
Mostly Cloudy
Driving Route Map
The map below follows the saved road route between Glassmanor and Rockville.
Turn-by-Turn Driving Directions
Step-by-step road directions between Glassmanor and Rockville.
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1
Start on Audrey Lane
20 m · 7 sec · Audrey Lane
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2
Continue on Audrey Lane
126 m · 21 sec · Audrey Lane
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3
Turn right onto Indian Head Highway
1001 ft · 30 sec · Indian Head Highway
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4
Continue on South Capitol Street
1.2 mi · 3 min · South Capitol Street
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5
Turn slight right onto I 295 North: Malcolm X Avenue, Dorothea Dix Avenue, DHS
639 ft · 18 sec
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6
Keep slight left to continue on I 295 North
870 ft · 25 sec
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7
Merge slight left onto Anacostia Freeway
2.2 mi · 3 min · Anacostia Freeway
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8
Keep slight left to continue on Southeast Freeway
2.3 mi · 4 min · Southeast Freeway
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9
Continue on Southwest Freeway
1540 ft · 33 sec · Southwest Freeway
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10
Take the exit slight right toward Maine Avenue Southwest, 12th Street Northwest, Downtown
1102 ft · 27 sec
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11
Keep slight right to continue on 12th Street Northwest, Downtown
1010 ft · 25 sec
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12
Keep slight left to continue on D Street
156 m · 16 sec
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13
Turn right onto 12th Street Southwest
945 ft · 31 sec · 12th Street Southwest
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14
Turn left onto Independence Avenue Southwest
3105 ft · 1 min · Independence Avenue Southwest
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15
Keep slight right to continue on 17th Street Southwest
1602 ft · 41 sec · 17th Street Southwest
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16
Continue on 17th Street Northwest
1570 ft · 36 sec · 17th Street Northwest
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17
Turn left onto New York Avenue Northwest
666 ft · 13 sec · New York Avenue Northwest
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18
Continue on E Street Northwest
916 ft · 19 sec · E Street Northwest
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19
Continue on E Street Expressway
1706 ft · 21 sec · E Street Expressway
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20
Keep slight right to continue on Whitehurst Freeway
1010 ft · 25 sec
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21
Merge slight left onto Potomac Freeway
1281 ft · 27 sec · Potomac Freeway
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22
Keep slight left to continue on Rock Creek Parkway
531 ft · 13 sec
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23
Keep slight right
51 m · 4 sec
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24
Merge slight left onto 27th Street Northwest
54 m · 4 sec · 27th Street Northwest
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25
Take the exit slight left
30 m · 9 sec
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26
Merge slight right onto Whitehurst Freeway
1.3 km · 2 min · Whitehurst Freeway
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27
Turn left onto Canal Road Northwest
3.1 mi · 6 min · Canal Road Northwest
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28
Continue on Clara Barton Parkway Northwest
3.4 mi · 7 min · Clara Barton Parkway Northwest
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29
Keep slight right to continue on Cabin John Parkway
1.3 mi · 2 min · Cabin John Parkway
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30
Keep slight left to continue on Cabin John Parkway
1212 ft · 19 sec · Cabin John Parkway
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31
Merge slight left onto Capital Beltway
1.3 mi · 2 min · Capital Beltway
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32
Keep slight left to continue on I 270: Rockville, Frederick
3.1 mi · 4 min
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33
Keep slight right to continue on I 270 North
1.8 mi · 2 min
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34
Take the exit slight right toward MD 189: Falls Road
753 ft · 18 sec
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35
Keep slight right to continue on MD 189 North: Falls Road, Rockville, Town Center
567 ft · 14 sec
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36
Turn straight onto Falls Road
132 m · 21 sec · Falls Road
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37
Turn left onto Great Falls Road
1.1 km · 2 min · Great Falls Road
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38
Continue on West Montgomery Avenue
1159 ft · 38 sec · West Montgomery Avenue
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39
Turn right onto South Washington Street
19 m · 2 sec · South Washington Street
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40
Arrive at your destination
0 m · 1 sec · South Washington Street
Car Route Details
A richer read on the saved driving route between Glassmanor and Rockville.
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.
Clara Barton Parkway Northwest
Continue on Clara Barton Parkway Northwest
3.38 mi · 00h 07m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Scattered Rain Showers leaving Glassmanor and Mostly Cloudy near Rockville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Glassmanor to Rockville?
The road trip is about 35.2 miles (56.6 km) and usually takes 00h 43m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Brookmont is a useful midpoint, sitting about 12.9 miles from Glassmanor and 22.2 miles from Rockville.
How much longer is the road route than the straight-line distance?
The direct path is about 20.1 miles (32.3 km), while the road route adds roughly 15.1 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 7:00 AM to 7:00 PM EST. If you want a more comfortable same-day return, try to leave by 7:02 PM EST.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.90 one way or $9.81 round trip. Estimated CO2 is about 11 kg one way.
What should you check before leaving?
Before you leave, expect Scattered Rain Showers around Glassmanor and Mostly Cloudy near Rockville.
Stop Ideas Near Brookmont
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
United States Capitol
D C Government
THEARC: Town Hall Education Arts Recreation Campus
Town Hall Liquor And Bar
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Brookmont.
Washington Union Station
Rockville station
Union Station
New Carrollton station
Flight Path Map
This map shows the direct air route between Glassmanor and Rockville. Straight-line distance: 20.1 mi (32.34 km).
#1 Glassmanor
Glassmanor is a place in Maryland, United States.
| Population | 0 |
| Coordinates | 38.8190000, -76.9985900 |
| Altitude | 19 |
| Country | United States |
#2 Rockville
The most populous city in Montgomery County, Maryland.
| Population | 69,512 |
| Coordinates | 39.0840000, -77.1527600 |
| Altitude | 137 |
| Country | United States |
End: South Washington Street (-77.152887, 39.083997)
Estimated Travel Time
Distance: 57 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 10m |
| 40 mph (64.37 km/h) | 00h 52m |
| 50 mph (80.47 km/h) | 00h 42m |
| 60 mph (96.56 km/h) | 00h 35m |
| 70 mph (112.65 km/h) | 00h 30m |
| 80 mph (129 km/h) | 00h 26m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.96 | $4.90 | $9.81 |
| Mid-grade | $4.57 | $5.67 | $11.34 |
| Premium | $4.89 | $6.07 | $12.13 |
| Diesel | $6.30 | $7.81 | $15.63 |
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 06, 2026