How far is Colesville, MD from Gwynn Oak, MD?
The driving distance from Colesville, MD to Gwynn Oak, MD is about 30 miles (48.2 km), with a travel time of about 00h 36m by car.
- The straight-line flight distance is about 24.3 miles (39.1 km).
- For a round trip, plan for roughly 01h 12m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM EDT.
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 36m.
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 community in Howard 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 Colesville and Gwynn Oak.
Turn-by-Turn Driving Directions
Step-by-step road directions between Colesville and Gwynn Oak.
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1
Start on East Randolph Road
5 m · 5 sec · East Randolph Road
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2
Turn left onto New Hampshire Avenue
1.4 km · 1 min · New Hampshire Avenue
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3
Take the ramp right toward MD 200 Toll East
1190 ft · 29 sec
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4
Merge slight left onto Intercounty Connector
2.1 mi · 3 min · Intercounty Connector
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5
Take the exit slight right toward US 29: Silver Spring, Columbia
1170 ft · 29 sec
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6
Keep slight left to continue on US 29 North: Columbia
2435 ft · 59 sec
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7
Merge slight left onto Columbia Pike
16.5 mi · 22 min · Columbia Pike
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8
Take the exit slight right toward I 70 East: Baltimore
1.1 km · 1 min
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9
Merge slight left
6 mi · 7 min
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10
Take the exit slight right toward Security Boulevard
1469 ft · 36 sec
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11
Turn straight onto Security Boulevard
916 ft · 22 sec · Security Boulevard
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12
Turn right onto North Forest Park Avenue
1.4 mi · 4 min · North Forest Park Avenue
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13
Turn slight left onto Hillsdale Road
1.5 km · 3 min · Hillsdale Road
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14
Turn right onto Haddon Avenue
54 m · 11 sec · Haddon Avenue
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15
Turn left
18 m · 4 sec
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16
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Colesville and Gwynn Oak.
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 left onto Columbia Pike
16.5 mi · 00h 22m
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.
Sunny leaving Colesville and Sunny near Gwynn Oak.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Colesville to Gwynn Oak?
The road trip is about 30 miles (48.2 km) and usually takes 00h 36m 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?
Ellicott City is a useful midpoint, sitting about 15 miles from Colesville and 15 miles from Gwynn Oak.
How much longer is the road route than the straight-line distance?
The direct path is about 24.3 miles (39.1 km), while the road route adds roughly 5.7 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 7:00 AM to 7:00 PM EDT. If you want a more comfortable same-day return, try to leave by 7:18 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.33 one way or $8.66 round trip. Estimated CO2 is about 9.4 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Colesville and Sunny near Gwynn Oak.
Flight Path Map
This map shows the direct air route between Colesville and Gwynn Oak. Straight-line distance: 24.27 mi (39.06 km).
#1 Colesville
Unincorporated area in Montgomery County, Maryland, United States
| Population | 14,647 |
| Coordinates | 39.0756600, -77.0019200 |
| Altitude | 133 |
| Country | United States |
#2 Gwynn Oak
A census-designated place in Baltimore County, Maryland.
| Population | 47,092 |
| Coordinates | 39.3326100, -76.6927500 |
| Altitude | 130 |
| Country | United States |
End: (-76.692724, 39.332601)
Estimated Travel Time
Distance: 48 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 59m |
| 40 mph (64.37 km/h) | 00h 44m |
| 50 mph (80.47 km/h) | 00h 35m |
| 60 mph (96.56 km/h) | 00h 29m |
| 70 mph (112.65 km/h) | 00h 25m |
| 80 mph (129 km/h) | 00h 22m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $4.33 | $8.66 |
| Mid-grade | $4.60 | $4.87 | $9.75 |
| Premium | $4.95 | $5.25 | $10.50 |
| Diesel | $5.98 | $6.34 | $12.68 |
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.