How far is Marietta, GA from St. Marys, GA?
The driving distance from Marietta, GA to St. Marys, GA is about 361.3 miles (581.5 km), with a travel time of about 06h 43m by car.
- The straight-line flight distance is about 283.3 miles (456 km).
- For a round trip, plan for roughly 13h 26m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM EDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
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 06h 43m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
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.
Human settlement in Emanuel County, Georgia, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms Likely
Showers And Thunderstorms Likely
Driving Route Map
The map below follows the saved road route between Marietta and St. Marys.
Turn-by-Turn Driving Directions
Step-by-step road directions between Marietta and St. Marys.
-
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
5 mi · 7 min · Downtown Connector
-
10
Continue on James Wendell George Parkway
2.3 mi · 3 min · James Wendell George Parkway
-
11
Keep slight left
64.8 mi · 1 hr 12 min
-
12
Keep slight left to continue on Macon, Savannah
12.3 mi · 13 min
-
13
Take the exit slight right toward I 16 East: Jim Gillis Highway, Savannah
1.1 mi · 1 min
-
14
Continue straight
155.9 mi · 2 hr 48 min
-
15
Take the exit slight right toward I 95 South: Brunswick, Jacksonville
2418 ft · 32 sec
-
16
Merge slight left
94.5 mi · 1 hr 42 min
-
17
Take the exit slight right toward GA 40: Kingsland, St Marys
1675 ft · 43 sec
-
18
Turn left onto East King Avenue
2.5 mi · 4 min · East King Avenue
-
19
Continue on Kingsland Saint Marys Road
3 mi · 5 min · Kingsland Saint Marys Road
-
20
Continue on Osborne Road
3 mi · 5 min · Osborne Road
-
21
Turn right onto West Hall Street
24 m · 3 sec · West Hall Street
-
22
Arrive at your destination
0 m · 1 sec · West Hall Street
Car Route Details
A richer read on the saved driving route between Marietta and St. Marys.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
I 16 East
Continue straight
156 mi · 02h 48m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Showers And Thunderstorms Likely leaving Marietta and Showers And Thunderstorms Likely near St. Marys.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Marietta to St. Marys?
The road trip is about 361.3 miles (581.5 km) and usually takes 06h 43m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Nunez is a useful midpoint, sitting about 180.7 miles from Marietta and 180.6 miles from St. Marys.
How much longer is the road route than the straight-line distance?
The direct path is about 283.3 miles (456 km), while the road route adds roughly 78 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 6:00 AM to 7:30 AM EDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $50.50 one way or $101.01 round trip. Estimated CO2 is about 113.3 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms Likely around Marietta and Showers And Thunderstorms Likely near St. Marys.
Stop Ideas Near Nunez
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 Nunez.
Jesup
Flight Path Map
This map shows the direct air route between Marietta and St. Marys. Straight-line distance: 283.34 mi (455.99 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 St. Marys
City in Camden County, Georgia, USA
| Population | 17,968 |
| Coordinates | 30.7305100, -81.5464900 |
| Altitude | 3 |
| Country | United States |
End: St. Marys (-81.54649, 30.73051)
Estimated Travel Time
Distance: 582 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 12h 02m |
| 40 mph (64.37 km/h) | 09h 02m |
| 50 mph (80.47 km/h) | 07h 13m |
| 60 mph (96.56 km/h) | 06h 01m |
| 70 mph (112.65 km/h) | 05h 09m |
| 80 mph (129 km/h) | 04h 30m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.96 | $50.50 | $101.01 |
| Mid-grade | $4.43 | $56.47 | $112.94 |
| Premium | $4.78 | $60.92 | $121.84 |
| Diesel | $5.62 | $71.71 | $143.41 |
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 · May 24, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.