How far is Herald Harbor, MD from Rockville, MD?
The driving distance from Herald Harbor, MD to Rockville, MD is about 43.5 miles (70 km), with a travel time of about 00h 55m by car.
- The straight-line flight distance is about 31.4 miles (50.5 km).
- For a round trip, plan for roughly 01h 51m 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 55m.
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.
Census-designated place in Howard County, Maryland, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms
Rain Showers
Driving Route Map
The map below follows the saved road route between Herald Harbor and Rockville.
Turn-by-Turn Driving Directions
Step-by-step road directions between Herald Harbor and Rockville.
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1
Start on Hazel Trail
8 m · 6 sec · Hazel Trail
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2
Turn right onto Kyle Road
2196 ft · 2 min · Kyle Road
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3
Continue on Kyle Road
1164 ft · 51 sec · Kyle Road
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4
Turn right onto Herald Harbor Road
1 km · 2 min · Herald Harbor Road
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5
Continue on Herald Harbor Road
1.4 mi · 3 min · Herald Harbor Road
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6
At the end of the road, turn right onto Generals Highway
1381 ft · 30 sec · Generals Highway
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7
Take the ramp straight
1 mi · 2 min
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8
Merge slight left
1.1 km · 49 sec
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9
Keep slight right to continue on Patuxent Freeway
14.7 mi · 20 min · Patuxent Freeway
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10
Take the exit slight left toward I 95 South: Washington
2084 ft · 51 sec
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11
Merge slight right
6.5 mi · 8 min
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12
Take the exit slight right toward MD 200 Toll West
1.5 km · 1 min
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13
Merge slight left onto Intercounty Connector
9.5 mi · 12 min · Intercounty Connector
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14
Take the exit slight right toward MD 97: Georgia Avenue, Olney, Wheaton
1708 ft · 42 sec
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15
Keep slight left to continue on MD 97 South: Georgia Avenue South, Wheaton
2642 ft · 1 min
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16
Turn right onto Georgia Avenue
1.2 km · 1 min · Georgia Avenue
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17
Turn right onto Norbeck Road
3.6 mi · 6 min · Norbeck Road
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18
Continue on First Street
2575 ft · 57 sec · First Street
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19
Turn right onto Veirs Mill Road
2936 ft · 1 min · Veirs Mill Road
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20
Continue on East Jefferson Street
1622 ft · 54 sec · East Jefferson Street
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21
Turn right onto South Washington Street
91 m · 10 sec · South Washington Street
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22
Arrive at your destination
0 m · 1 sec · South Washington Street
Car Route Details
A richer read on the saved driving route between Herald Harbor 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.
Patuxent Freeway
Keep slight right to continue on Patuxent Freeway
14.7 mi · 00h 20m
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.
Showers And Thunderstorms leaving Herald Harbor and Rain Showers near Rockville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Herald Harbor to Rockville?
The road trip is about 43.5 miles (70 km) and usually takes 00h 55m 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?
North Laurel is a useful midpoint, sitting about 21.6 miles from Herald Harbor and 21.9 miles from Rockville.
How much longer is the road route than the straight-line distance?
The direct path is about 31.4 miles (50.5 km), while the road route adds roughly 12.1 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 4:38 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.25 one way or $12.50 round trip. Estimated CO2 is about 13.6 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms around Herald Harbor and Rain Showers near Rockville.
Stop Ideas Near North Laurel
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 North Laurel.
BWI Rail Station
New Carrollton station
Rockville station
Washington Union Station
Flight Path Map
This map shows the direct air route between Herald Harbor and Rockville. Straight-line distance: 31.38 mi (50.5 km).
#1 Herald Harbor
Census designated place
| Population | 2,603 |
| Coordinates | 39.0537200, -76.5691300 |
| Altitude | 15 |
| 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: 70 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 27m |
| 40 mph (64.37 km/h) | 01h 05m |
| 50 mph (80.47 km/h) | 00h 52m |
| 60 mph (96.56 km/h) | 00h 43m |
| 70 mph (112.65 km/h) | 00h 37m |
| 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 | $6.25 | $12.50 |
| Mid-grade | $4.60 | $7.04 | $14.07 |
| Premium | $4.95 | $7.58 | $15.16 |
| Diesel | $5.98 | $9.15 | $18.30 |
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.