How far is Gwynn Oak, MD from Herald Harbor, MD?
The driving distance from Gwynn Oak, MD to Herald Harbor, MD is about 28.8 miles (46.3 km), with a travel time of about 00h 47m by car.
- The straight-line flight distance is about 20.4 miles (32.8 km).
- For a round trip, plan for roughly 01h 34m 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 47m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Town in Anne Arundel County, Maryland, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers
Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Gwynn Oak and Herald Harbor.
Turn-by-Turn Driving Directions
Step-by-step road directions between Gwynn Oak and Herald Harbor.
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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
1.6 mi · 3 min · Ingleside Avenue
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6
Turn right onto Baltimore National Pike
2671 ft · 56 sec · Baltimore National Pike
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7
Take the ramp left toward I 695 South: Glen Burnie
2015 ft · 51 sec
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8
Merge slight left onto Baltimore Beltway
7.6 mi · 10 min · Baltimore Beltway
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9
Take the exit slight left toward I 97 South: Annapolis, Bay Bridge
1.4 km · 1 min
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10
Continue straight
8.9 mi · 10 min
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11
Keep slight left to continue on Bay Bridge
2.5 mi · 3 min
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12
Take the exit slight right toward MD 178: Crownsville
1 mi · 2 min
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13
Continue on Generals Highway
1381 ft · 31 sec · Generals Highway
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14
Turn left onto Herald Harbor Road
1.4 mi · 3 min · Herald Harbor Road
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15
At the end of the road, turn left onto Herald Harbor Road
1.1 km · 2 min · Herald Harbor Road
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16
Continue on Hall Road
137 m · 20 sec · Hall Road
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17
Turn sharp left onto Buttonwood Trail
1152 ft · 51 sec · Buttonwood Trail
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18
Continue on Kyle Road
605 ft · 27 sec · Kyle Road
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19
Keep slight right to continue on Kyle Road
1591 ft · 1 min · Kyle Road
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20
Turn left onto Hazel Trail
8 m · 1 sec · Hazel Trail
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21
Arrive at your destination
0 m · 1 sec · Hazel Trail
Car Route Details
A richer read on the saved driving route between Gwynn Oak and Herald Harbor.
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.
I 97 South
Continue straight
8.87 mi · 00h 10m
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.
Rain Showers leaving Gwynn Oak and Showers And Thunderstorms near Herald Harbor.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Gwynn Oak to Herald Harbor?
The road trip is about 28.8 miles (46.3 km) and usually takes 00h 47m 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?
Ferndale is a useful midpoint, sitting about 14.4 miles from Gwynn Oak and 14.4 miles from Herald Harbor.
How much longer is the road route than the straight-line distance?
The direct path is about 20.4 miles (32.8 km), while the road route adds roughly 8.4 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 4:56 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.13 one way or $8.25 round trip. Estimated CO2 is about 9 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers around Gwynn Oak and Showers And Thunderstorms near Herald Harbor.
Stop Ideas Near Ferndale
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
City of Bowie
Baltimore City Hall
Relay Town Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Ferndale.
BWI Rail Station
Pennsylvania Station
New Carrollton station
Kent Island, MD
Flight Path Map
This map shows the direct air route between Gwynn Oak and Herald Harbor. Straight-line distance: 20.37 mi (32.79 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 Herald Harbor
Census designated place
| Population | 2,603 |
| Coordinates | 39.0537200, -76.5691300 |
| Altitude | 15 |
| Country | United States |
End: Herald Harbor (-76.56913, 39.05372)
Estimated Travel Time
Distance: 46 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 57m |
| 40 mph (64.37 km/h) | 00h 43m |
| 50 mph (80.47 km/h) | 00h 34m |
| 60 mph (96.56 km/h) | 00h 28m |
| 70 mph (112.65 km/h) | 00h 24m |
| 80 mph (129 km/h) | 00h 21m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $4.13 | $8.25 |
| Mid-grade | $4.60 | $4.64 | $9.29 |
| Premium | $4.95 | $5.00 | $10.01 |
| Diesel | $5.98 | $6.04 | $12.08 |
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 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.