How far is Decatur, GA from Marietta, GA?

Distance by Flight

Shortest distance between Decatur and Marietta is 19.04 miles (30.64 km).

Flight distance from Decatur, GA to Marietta, GA is 19.04 miles. Estimated flight time is 00 hours 03 minutes.

Driving distance

The driving distance from Decatur, Georgia to Marietta, Georgia is: 25.33 miles (40.76 km) by car.

Driving from Decatur to Marietta will take approximately 00 hours 39 minutes.

#1 Decatur

County seat of DeKalb County, Georgia, United States

Population	25655
GPS Coordinates	33°46'29"N 84°17'47"W
Latitude	33.7748300
Longitude	-84.2963100
Altitude	318
Country	United States

The most populous city in Cobb County, Georgia. It is located in the northern part of the state. Marietta is known for its many parks and green spaces, its many historical sites, and its many attractions, such as the Marietta Museum of History and the Marietta Cobb Museum of Art.

Population	60786
GPS Coordinates	33°57'9"N 84°32'60"W
Latitude	33.9526000
Longitude	-84.5499300
Altitude	344
Country	United States

Starting point in Decatur: East Court Square (-84.296067,33.774966)
Ending point in Marietta: West Park Square (-84.550173,33.952601)

Estimated Travel Time Between Decatur and Marietta

The distance between Decatur and Marietta is 41 km if you choose to drive by road. You can go 00 hours 27 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 Decatur and Marietta. The current time is 21:15:43.

Average Speed	Travel Time
30 mph (48.3 km/h)	00 hours 50 minutes
40 mph (64.37 km/h)	00 hours 37 minutes
50 mph (80.47 km/h)	00 hours 30 minutes
60 mph (96.56 km/h)	00 hours 25 minutes
70 mph (112.65 km/h)	00 hours 21 minutes
75 mph (120.7 km/h)	00 hours 20 minutes
80 mph (128.75 km/h)	00 hours 18 minutes

Gas Consumption

A car with a fuel efficiency of 8.3 l/100 km will need 3.38 liters (0.89 gallon) of gas to cover the route between Decatur and Marietta.
The estimated cost of gas to go from Decatur to Marietta is $2.68 (diesel $3.65).

Georgia gas prices.

	Gasoline	Mid Grade	Premium	Diesel
Gallon	$3	$3.43	$3.82	$4.08
Total	$2.68	$3.07	$3.42	$3.65

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 Georgia ) per gallon of daily gas for calculations is $2.995 (Diesel $4.079) /gallon. Last changed prices on December 26, 2024.

How did we calculate the distance?

The place names are translated into coordinates to approximate the distance between Decatur and Marietta (latitude and longitude). Cities, states, and countries each have their own regional center. The Haversine formula is used to measure the radius.