How far is Marietta, GA from North Decatur, GA?
The driving distance from Marietta, GA to North Decatur, GA is about 23 miles (37 km), with a travel time of about 00h 36m by car.
- The straight-line flight distance is about 18 miles (28.9 km).
- For a round trip, plan for roughly 01h 12m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM EDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 36m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Census designated place in the U.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Marietta and North Decatur.
Turn-by-Turn Driving Directions
Step-by-step road directions between Marietta and North Decatur.
-
1
Start on West Park Square
36 m · 11 sec · West Park Square
-
2
Continue on South Park Square
105 m · 9 sec · South Park Square
-
3
Continue on Roswell Street
1.7 mi · 4 min · Roswell Street
-
4
Turn right onto Cobb Parkway South
1.1 km · 1 min · Cobb Parkway South
-
5
Turn left onto South Marietta Parkway
1 km · 1 min · South Marietta Parkway
-
6
Take the exit slight right toward I 75 South: Atlanta
2479 ft · 53 sec
-
7
Merge slight left onto Larry McDonald Memorial Highway
5.2 mi · 6 min · Larry McDonald Memorial Highway
-
8
Continue on Horace E Tate Freeway
7.3 mi · 9 min · Horace E Tate Freeway
-
9
Continue on Downtown Connector
1.5 km · 1 min · Downtown Connector
-
10
Take the exit slight right toward US 78, US 278: North Avenue, Georgia Institute of Technology
1555 ft · 44 sec
-
11
Turn left onto North Avenue Northwest
2.4 mi · 5 min · North Avenue Northwest
-
12
Turn left onto Moreland Avenue Northeast
1006 ft · 28 sec · Moreland Avenue Northeast
-
13
Turn right onto Ponce de Leon Avenue Northeast
2314 ft · 1 min · Ponce de Leon Avenue Northeast
-
14
Turn left onto Oakdale Road Northeast
1.1 mi · 3 min · Oakdale Road Northeast
-
15
Enter the roundabout and take exit 1 toward North Decatur Road
2 m · 1 sec · North Decatur Road
-
16
Exit the roundabout onto North Decatur Road
897 ft · 18 sec · North Decatur Road
-
17
Enter the roundabout and take exit 2 toward North Decatur Road
23 m · 1 sec · North Decatur Road
-
18
Exit the roundabout onto North Decatur Road
1084 ft · 22 sec · North Decatur Road
-
19
Enter the roundabout and take exit 2 toward North Decatur Road;Oxford Road Northeast
20 m · 2 sec · North Decatur Road
-
20
Exit the rotary onto North Decatur Road
1.2 mi · 2 min · North Decatur Road
-
21
Arrive at your destination
0 m · 1 sec · North Decatur Road
Car Route Details
A richer read on the saved driving route between Marietta and North Decatur.
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.
Horace E Tate Freeway
Continue on Horace E Tate Freeway
7.28 mi · 00h 09m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Sunny leaving Marietta and Sunny near North Decatur.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Marietta to North Decatur?
The road trip is about 23 miles (37 km) and usually takes 00h 36m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Vinings is a useful midpoint, sitting about 11.5 miles from Marietta and 11.5 miles from North Decatur.
How much longer is the road route than the straight-line distance?
The direct path is about 18 miles (28.9 km), while the road route adds roughly 5 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 7:00 AM to 7:00 PM EDT. If you want a more comfortable same-day return, try to leave by 7:18 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.21 one way or $6.42 round trip. Estimated CO2 is about 7.2 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Marietta and Sunny near North Decatur.
Stop Ideas Near Vinings
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Cafe 55
Atlanta City Hall
College Park Recycling Drop off Center
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Vinings.
Peachtree Station
Gainesville
Flight Path Map
This map shows the direct air route between Marietta and North Decatur. Straight-line distance: 17.93 mi (28.85 km).
#1 Marietta
The most populous city in Cobb County, Georgia.
| Population | 60,786 |
| Coordinates | 33.9526000, -84.5499300 |
| Altitude | 344 |
| Country | United States |
#2 North Decatur
Census-designated place in DeKalb County, Georgia
| Population | 16,698 |
| Coordinates | 33.7903800, -84.3060300 |
| Altitude | 303 |
| Country | United States |
End: North Decatur (-84.30603, 33.79038)
Estimated Travel Time
Distance: 37 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 45m |
| 40 mph (64.37 km/h) | 00h 34m |
| 50 mph (80.47 km/h) | 00h 27m |
| 60 mph (96.56 km/h) | 00h 22m |
| 70 mph (112.65 km/h) | 00h 19m |
| 80 mph (129 km/h) | 00h 17m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.96 | $3.21 | $6.42 |
| Mid-grade | $4.43 | $3.59 | $7.17 |
| Premium | $4.78 | $3.87 | $7.74 |
| Diesel | $5.62 | $4.56 | $9.11 |
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 Georgia · Apr 20, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.