How far is Dumbarton, VA from Portsmouth, VA?
Distance by Flight
Shortest distance between Dumbarton and Portsmouth is 84.42 miles (135.87 km).
Flight distance from Dumbarton, VA to Portsmouth, VA is 84.42 miles. Estimated flight time is 00 hours 12 minutes.
It takes 00 hours 11 minutes to travel from Dumbarton to Portsmouth with an airplane (average speed of 550 miles).
Driving distance
The driving distance from Dumbarton, Virginia to Portsmouth, Virginia is: 103.76 miles (166.99 km) by car.
Driving from Dumbarton to Portsmouth will take approximately 01 hours 45 minutes.
#1 Dumbarton
| Population | |
|---|---|
| GPS Coordinates | 37°36'14"N 77°29'29"W |
| Latitude | 37.6037600 |
| Longitude | -77.4913700 |
| Altitude | 61 |
| Country | United States |
#2 Portsmouth
The most populous city in Portsmouth, Virginia. It is located on the Elizabeth River in southeastern Virginia. Portsmouth is known for its many parks and green spaces, its many historical sites
| Population | 95094 |
|---|---|
| GPS Coordinates | 36°50'8"N 76°17'54"W |
| Latitude | 36.8354300 |
| Longitude | -76.2982700 |
| Altitude | 3 |
| Country | United States |
Ending point in Portsmouth: High Street (-76.29827,36.835429)
Estimated Travel Time Between Dumbarton and Portsmouth
The distance between Dumbarton and Portsmouth is 167 km if you choose to drive by road. You can go 01 hours 51 minutes if you drive your car at an average speed of 90 kilometers / hour. For different choices, please review the avg. speed travel time table on the below.
There is no time difference between Dumbarton and Portsmouth. The current time is 04:40:34.
| Average Speed | Travel Time |
|---|---|
| 30 mph (48.3 km/h) | 03 hours 27 minutes |
| 40 mph (64.37 km/h) | 02 hours 35 minutes |
| 50 mph (80.47 km/h) | 02 hours 04 minutes |
| 60 mph (96.56 km/h) | 01 hours 43 minutes |
| 70 mph (112.65 km/h) | 01 hours 28 minutes |
| 75 mph (120.7 km/h) | 01 hours 23 minutes |
| 80 mph (128.75 km/h) | 01 hours 17 minutes |
Gas Consumption
A car with a fuel efficiency of 8.3 l/100 km will need 13.86 liters (3.66 gallon) of gas to cover the route between Dumbarton and Portsmouth.
The estimated cost of gas to go from Dumbarton to Portsmouth is $12.16 (diesel $15.72).
Virginia gas prices.
| Gasoline | Mid Grade | Premium | Diesel | |
|---|---|---|---|---|
| Gallon | $3.32 | $3.76 | $4.12 | $4.29 |
| Total | $12.16 | $13.78 | $15.07 | $15.72 |
Take a look at our Gas Cost Calculator feature. It will figure out how much it will cost to drive this particular distance.
The average gas price (in Virginia ) per gallon of daily gas for calculations is $3.320 (Diesel $4.292) /gallon. Last changed prices on December 29, 2025.
How did we calculate the distance?
The place names are translated into coordinates to approximate the distance between Dumbarton and Portsmouth (latitude and longitude). Cities, states, and countries each have their own regional center. The Haversine formula is used to measure the radius.
