How far is Dunwoody, GA from Saint Simon Mills, GA?
The driving distance from Dunwoody, GA to Saint Simon Mills, GA is about 326.3 miles (525.2 km), with a travel time of about 06h 07m by car.
- The straight-line flight distance is about 256.6 miles (412.9 km).
- For a round trip, plan for roughly 12h 14m 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 07m.
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.
City in Treutlen County, Georgia, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Showers And Thunderstorms
Partly Sunny
Driving Route Map
The map below follows the saved road route between Dunwoody and Saint Simon Mills.
Turn-by-Turn Driving Directions
Step-by-step road directions between Dunwoody and Saint Simon Mills.
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1
Start on the route
36 m · 10 sec
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2
Turn right onto Chamblee Dunwoody Road
1.6 mi · 3 min · Chamblee Dunwoody Road
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3
Continue on Chamblee Dunwoody Way
668 ft · 20 sec · Chamblee Dunwoody Way
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4
Continue on North Shallowford Road
1.4 km · 2 min · North Shallowford Road
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5
Turn left onto Savoy Drive
2451 ft · 1 min · Savoy Drive
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6
Take the ramp straight toward I 285 East
1782 ft · 43 sec
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7
Merge slight left onto Atlanta Bypass / The Perimeter
20.9 mi · 24 min · Atlanta Bypass / The Perimeter
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8
Take the exit slight right toward I 675 South: Macon
1.1 mi · 2 min
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9
Continue on Terrell Starr Parkway
10.2 mi · 12 min · Terrell Starr Parkway
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10
Merge slight left
49.3 mi · 53 min
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11
Keep slight left to continue on Macon, Savannah
12.3 mi · 13 min
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12
Take the exit slight right toward I 16 East: Jim Gillis Highway, Savannah
1.1 mi · 1 min
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13
Continue straight
155.9 mi · 2 hr 48 min
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14
Take the exit slight right toward I 95 South: Brunswick, Jacksonville
2418 ft · 32 sec
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15
Merge slight left
60 mi · 1 hr 4 min
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16
Take the exit slight right toward US 17, GA 25 Spur: Brunswick, Veterans Memorial, North Golden Isles Parkway
2202 ft · 56 sec
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17
Turn left onto Golden Isles Parkway
4.7 mi · 8 min · Golden Isles Parkway
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18
Continue on Glynn Avenue
1.5 mi · 3 min · Glynn Avenue
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19
Turn left onto Fernando Joseph Torras Causeway
2 mi · 3 min · Fernando Joseph Torras Causeway
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20
Continue on F. J. Torras Causeway
2.3 mi · 4 min · F. J. Torras Causeway
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21
Keep slight left
577 ft · 14 sec
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22
Continue on Sea Island Road
1935 ft · 46 sec · Sea Island Road
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23
Turn left onto Hamilton Road
1085 ft · 48 sec · Hamilton Road
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24
Turn right onto Arthur J. Moore Drive
115 m · 17 sec · Arthur J. Moore Drive
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25
Arrive at your destination
0 m · 1 sec · Arthur J. Moore Drive
Car Route Details
A richer read on the saved driving route between Dunwoody and Saint Simon Mills.
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.
Chance Showers And Thunderstorms leaving Dunwoody and Partly Sunny near Saint Simon Mills.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Dunwoody to Saint Simon Mills?
The road trip is about 326.3 miles (525.2 km) and usually takes 06h 07m 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?
Soperton is a useful midpoint, sitting about 163.2 miles from Dunwoody and 163.2 miles from Saint Simon Mills.
How much longer is the road route than the straight-line distance?
The direct path is about 256.6 miles (412.9 km), while the road route adds roughly 69.7 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 $45.63 one way or $91.26 round trip. Estimated CO2 is about 102.4 kg one way.
What should you check before leaving?
Before you leave, expect Chance Showers And Thunderstorms around Dunwoody and Partly Sunny near Saint Simon Mills.
Stop Ideas Near Soperton
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 Soperton.
Jesup
Flight Path Map
This map shows the direct air route between Dunwoody and Saint Simon Mills. Straight-line distance: 256.55 mi (412.88 km).
#1 Dunwoody
Town in DeKalb County, Georgia, USA
| Population | 49,326 |
| Coordinates | 33.9462100, -84.3346500 |
| Altitude | 345 |
| Country | United States |
#2 Saint Simon Mills
City in Glynn County, Georgia, United States of America
| Population | 13,915 |
| Coordinates | 31.1707900, -81.4073200 |
| Altitude | 3 |
| Country | United States |
End: Saint Simon Mills (-81.40732, 31.17079)
Estimated Travel Time
Distance: 525 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 52m |
| 40 mph (64.37 km/h) | 08h 09m |
| 50 mph (80.47 km/h) | 06h 31m |
| 60 mph (96.56 km/h) | 05h 26m |
| 70 mph (112.65 km/h) | 04h 39m |
| 80 mph (129 km/h) | 04h 04m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.96 | $45.63 | $91.26 |
| Mid-grade | $4.43 | $51.02 | $102.04 |
| Premium | $4.78 | $55.04 | $110.09 |
| Diesel | $5.62 | $64.79 | $129.58 |
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 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.