How far is Lebanon, NH from Portsmouth, NH?
Distance by Flight
Shortest distance between Lebanon and Portsmouth is 84.61 miles (136.16 km).
Flight distance from Lebanon, NH to Portsmouth, NH is 84.61 miles. Estimated flight time is 00 hours 13 minutes.
It takes 00 hours 12 minutes to travel from Lebanon to Portsmouth with an airplane (average speed of 550 miles).
Driving distance
The driving distance from Lebanon, New Hampshire to Portsmouth, New Hampshire is: 113.41 miles (182.51 km) by car.
Driving from Lebanon to Portsmouth will take approximately 01 hours 47 minutes.
#1 Lebanon
City in Grafton County, New Hampshire, United States
| Population | 13808 |
|---|---|
| GPS Coordinates | 43°38'32"N 72°15'6"W |
| Latitude | 43.6422900 |
| Longitude | -72.2517600 |
| Altitude | 178 |
| Country | United States |
#2 Portsmouth
City in Rockingham County, New Hampshire, United States
| Population | 21557 |
|---|---|
| GPS Coordinates | 43°4'37"N 70°45'28"W |
| Latitude | 43.0770400 |
| Longitude | -70.7576600 |
| Altitude | 6 |
| Country | United States |
Ending point in Portsmouth: Congress Street (-70.757617,43.077054)
Estimated Travel Time Between Lebanon and Portsmouth
The distance between Lebanon and Portsmouth is 183 km if you choose to drive by road. You can go 02 hours 01 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 Lebanon and Portsmouth. The current time is 14:16:41.
| Average Speed | Travel Time |
|---|---|
| 30 mph (48.3 km/h) | 03 hours 46 minutes |
| 40 mph (64.37 km/h) | 02 hours 50 minutes |
| 50 mph (80.47 km/h) | 02 hours 16 minutes |
| 60 mph (96.56 km/h) | 01 hours 53 minutes |
| 70 mph (112.65 km/h) | 01 hours 37 minutes |
| 75 mph (120.7 km/h) | 01 hours 30 minutes |
| 80 mph (128.75 km/h) | 01 hours 24 minutes |
Gas Consumption
A car with a fuel efficiency of 8.3 l/100 km will need 15.15 liters (4 gallon) of gas to cover the route between Lebanon and Portsmouth.
The estimated cost of gas to go from Lebanon to Portsmouth is $13.99 (diesel $17.54).
New Hampshire gas prices.
| Gasoline | Mid Grade | Premium | Diesel | |
|---|---|---|---|---|
| Gallon | $3.5 | $3.96 | $4.38 | $4.38 |
| Total | $13.99 | $15.85 | $17.54 | $17.54 |
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 New Hampshire ) per gallon of daily gas for calculations is $3.496 (Diesel $4.384) /gallon. Last changed prices on March 27, 2025.
How did we calculate the distance?
The place names are translated into coordinates to approximate the distance between Lebanon and Portsmouth (latitude and longitude). Cities, states, and countries each have their own regional center. The Haversine formula is used to measure the radius.
Distance to Other Cities
Driving distance from Derry Village, NH to Lebanon 80.81 miles (130 km)
Driving distance from East Concord, NH to Lebanon 62.39 miles (100 km)
