How far is Smyrna, GA from St. Marys, GA?
The driving distance from Smyrna, GA to St. Marys, GA is about 305.7 miles (492 km), with a travel time of about 06h 00m by car.
- The straight-line flight distance is about 226 miles (363.7 km).
- For a round trip, plan for roughly 12h 01m 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 00m.
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.
Town in Candler County, Georgia, United States
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 Smyrna and St. Marys.
Turn-by-Turn Driving Directions
Step-by-step road directions between Smyrna and St. Marys.
-
1
Start on Buckhead Road
31 m · 7 sec · Buckhead Road
-
2
Turn left onto Greensboro Road
3 mi · 4 min · Greensboro Road
-
3
Turn left onto Madison Bypass
2.6 mi · 4 min · Madison Bypass
-
4
Turn left onto Bethany Road
3.7 mi · 5 min · Bethany Road
-
5
Keep slight right to continue on Bethany Church Road
2.6 mi · 4 min · Bethany Church Road
-
6
Turn right onto Seven Islands Road
1.1 mi · 2 min · Seven Islands Road
-
7
Turn left
16.6 mi · 23 min
-
8
Merge slight left onto Milledgeville Road
15.9 mi · 22 min · Milledgeville Road
-
9
Take the exit right
44 mi · 55 min
-
10
Turn left
5.4 mi · 9 min
-
11
Continue on Martin Luther King Jr Drive
3.5 mi · 6 min · Martin Luther King Jr Drive
-
12
Take the ramp left
1697 ft · 42 sec
-
13
Merge slight left onto Jim Gillis Historic Savannah Parkway
103 mi · 1 hr 50 min · Jim Gillis Historic Savannah Parkway
-
14
Take the exit slight right toward I 95 South: Brunswick, Jacksonville
2418 ft · 32 sec
-
15
Merge slight left
94.5 mi · 1 hr 42 min
-
16
Take the exit slight right toward GA 40: Kingsland, St Marys
1675 ft · 43 sec
-
17
Turn left onto East King Avenue
2.5 mi · 4 min · East King Avenue
-
18
Continue on Kingsland Saint Marys Road
3 mi · 5 min · Kingsland Saint Marys Road
-
19
Continue on Osborne Road
3 mi · 5 min · Osborne Road
-
20
Turn right onto West Hall Street
24 m · 3 sec · West Hall Street
-
21
Arrive at your destination
0 m · 1 sec · West Hall Street
Car Route Details
A richer read on the saved driving route between Smyrna and St. Marys.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Jim Gillis Historic Savannah Parkway
Merge slight left onto Jim Gillis Historic Savannah Parkway
103 mi · 01h 50m
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.
Sunny leaving Smyrna and Sunny near St. Marys.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Smyrna to St. Marys?
The road trip is about 305.7 miles (492 km) and usually takes 06h 00m 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?
Pulaski is a useful midpoint, sitting about 153 miles from Smyrna and 152.8 miles from St. Marys.
How much longer is the road route than the straight-line distance?
The direct path is about 226 miles (363.7 km), while the road route adds roughly 79.7 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 $42.74 one way or $85.48 round trip. Estimated CO2 is about 95.9 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Smyrna and Sunny near St. Marys.
Stop Ideas Near Pulaski
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 Pulaski.
Savannah
Jesup
Yemassee
Flight Path Map
This map shows the direct air route between Smyrna and St. Marys. Straight-line distance: 225.98 mi (363.68 km).
#1 Smyrna
The most populous city in Cobb County, Georgia.
| Population | 56,443 |
| Coordinates | 33.5981800, -83.4048900 |
| Altitude | 188 |
| 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: 492 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 11m |
| 40 mph (64.37 km/h) | 07h 38m |
| 50 mph (80.47 km/h) | 06h 06m |
| 60 mph (96.56 km/h) | 05h 05m |
| 70 mph (112.65 km/h) | 04h 22m |
| 80 mph (129 km/h) | 03h 48m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.96 | $42.74 | $85.48 |
| Mid-grade | $4.43 | $47.79 | $95.58 |
| Premium | $4.78 | $51.55 | $103.11 |
| Diesel | $5.62 | $60.68 | $121.37 |
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 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.