How far is Gwynn Oak, MD from Cabin John, MD?
The driving distance from Gwynn Oak, MD to Cabin John, MD is about 42.8 miles (68.8 km), with a travel time of about 01h 05m by car.
- The straight-line flight distance is about 35.1 miles (56.5 km).
- For a round trip, plan for roughly 02h 10m 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 01h 05m.
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 in Montgomery County, Maryland, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Driving Route Map
The map below follows the saved road route between Gwynn Oak and Cabin John.
Turn-by-Turn Driving Directions
Step-by-step road directions between Gwynn Oak and Cabin John.
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1
Start on the route
18 m · 6 sec
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2
Turn right onto Haddon Avenue
54 m · 12 sec · Haddon Avenue
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3
Turn left onto Hillsdale Road
1.5 km · 3 min · Hillsdale Road
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4
Turn slight right onto West Forest Park Avenue
1.4 mi · 4 min · West Forest Park Avenue
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5
Continue on Ingleside Avenue
944 ft · 31 sec · Ingleside Avenue
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6
Take the ramp slight right toward I 70 West
1812 ft · 44 sec
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7
Merge slight left
5.4 mi · 6 min
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8
Take the exit slight left toward US 29 South: Columbia, Washington, Ellicott City
1.3 km · 2 min
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9
Merge slight right onto Columbia Pike
21.2 mi · 29 min · Columbia Pike
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10
Continue on Colesville Road
1 mi · 2 min · Colesville Road
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11
Take the exit slight right toward I 495 West: Bethesda, Northern Virginia
1912 ft · 47 sec
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12
Merge slight left onto Capital Beltway
5 mi · 7 min · Capital Beltway
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13
Keep slight left to continue on Capital Beltway
4 mi · 6 min · Capital Beltway
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14
Take the exit slight right toward MD 190: Washington, Potomac
1364 ft · 33 sec
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15
Keep slight right to continue on MD 190: Washington, Potomac
730 ft · 18 sec
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16
Keep slight left to continue on MD 190 West: Potomac
110 m · 13 sec
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17
Turn left onto River Road
887 ft · 24 sec · River Road
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18
Turn sharp left onto Seven Locks Road
1.1 mi · 2 min · Seven Locks Road
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19
Turn left onto Tomlinson Avenue
960 ft · 43 sec · Tomlinson Avenue
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20
Turn right onto 77th Street
74 m · 11 sec · 77th Street
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21
Arrive at your destination
0 m · 1 sec · 77th Street
Car Route Details
A richer read on the saved driving route between Gwynn Oak and Cabin John.
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.
Columbia Pike
Merge slight right onto Columbia Pike
21.2 mi · 00h 29m
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 Gwynn Oak and Sunny near Cabin John.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Gwynn Oak to Cabin John?
The road trip is about 42.8 miles (68.8 km) and usually takes 01h 05m 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?
Burtonsville is a useful midpoint, sitting about 21.4 miles from Gwynn Oak and 21.4 miles from Cabin John.
How much longer is the road route than the straight-line distance?
The direct path is about 35.1 miles (56.5 km), while the road route adds roughly 7.7 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 4:20 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.17 one way or $12.34 round trip. Estimated CO2 is about 13.4 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Gwynn Oak and Sunny near Cabin John.
Stop Ideas Near Burtonsville
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Griffith Park at City Hall
Gaithersburg City Hall
Town Hall Liquor And Bar
City of Rockville City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Burtonsville.
Rockville station
New Carrollton station
BWI Rail Station
Washington Union Station
Flight Path Map
This map shows the direct air route between Gwynn Oak and Cabin John. Straight-line distance: 35.08 mi (56.46 km).
#1 Gwynn Oak
A census-designated place in Baltimore County, Maryland.
| Population | 47,092 |
| Coordinates | 39.3326100, -76.6927500 |
| Altitude | 130 |
| Country | United States |
#2 Cabin John
Census-designated place in Montgomery County, Maryland, United States
| Population | 2,280 |
| Coordinates | 38.9753900, -77.1580300 |
| Altitude | 52 |
| Country | United States |
End: Cabin John (-77.15803, 38.97539)
Estimated Travel Time
Distance: 69 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 25m |
| 40 mph (64.37 km/h) | 01h 04m |
| 50 mph (80.47 km/h) | 00h 51m |
| 60 mph (96.56 km/h) | 00h 42m |
| 70 mph (112.65 km/h) | 00h 36m |
| 80 mph (129 km/h) | 00h 32m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $6.17 | $12.34 |
| Mid-grade | $4.60 | $6.94 | $13.89 |
| Premium | $4.95 | $7.48 | $14.96 |
| Diesel | $5.98 | $9.03 | $18.06 |
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 30, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.