How far is Saint Simon Mills, GA from Alpharetta, GA?
The driving distance from Saint Simon Mills, GA to Alpharetta, GA is about 340 miles (547.1 km), with a travel time of about 05h 26m by car.
- The straight-line flight distance is about 261.7 miles (421.1 km).
- For a round trip, plan for roughly 10h 52m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 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 05h 26m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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 Laurens County, Georgia, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Slight Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Saint Simon Mills and Alpharetta.
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint Simon Mills and Alpharetta.
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1
Start on Arthur J. Moore Drive
115 m · 19 sec · Arthur J. Moore Drive
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2
Turn left onto Hamilton Road
1085 ft · 49 sec · Hamilton Road
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3
At the end of the road, turn right onto Sea Island Road
157 m · 13 sec · Sea Island Road
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4
Turn straight
992 ft · 27 sec
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5
Keep slight right
1046 ft · 20 sec
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6
Continue on F. J. Torras Causeway
2.1 mi · 3 min · F. J. Torras Causeway
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7
Continue on Fernando Joseph Torras Causeway
2 mi · 3 min · Fernando Joseph Torras Causeway
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8
Turn right onto Glynn Avenue
1.6 mi · 3 min · Glynn Avenue
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9
Continue on Golden Isles Parkway
4.3 mi · 7 min · Golden Isles Parkway
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10
Take the exit slight right toward I 95 North: I 95 North
2923 ft · 1 min
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11
Merge slight left
60 mi · 1 hr 5 min
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12
Keep slight right
3075 ft · 48 sec
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13
Take the exit slight right toward I 16 West: Macon
1192 ft · 51 sec
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14
Merge slight left onto Jim Gillis Historic Savannah Parkway
155.9 mi · 2 hr 47 min · Jim Gillis Historic Savannah Parkway
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15
Continue on Fall Line Freeway
2560 ft · 40 sec · Fall Line Freeway
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16
Keep slight right to continue on I 75 North: Atlanta
2746 ft · 43 sec
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17
Merge slight left
62.1 mi · 1 hr 7 min
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18
Keep slight left to continue on I 75 North: Atlanta, Birmingham
22.8 mi · 28 min
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19
Keep slight left to continue on Northeast Expressway
2.7 mi · 4 min · Northeast Expressway
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20
Keep slight right to continue on T Harvey Mathis Parkway
7.1 mi · 9 min · T Harvey Mathis Parkway
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21
Continue on Turner McDonald Parkway
11 mi · 14 min · Turner McDonald Parkway
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22
Take the exit slight right toward Alpharetta, Haynes Bridge Road
1424 ft · 33 sec
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23
Turn left onto Haynes Bridge Road
1.3 mi · 2 min · Haynes Bridge Road
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24
Turn left onto Old Milton Parkway
869 ft · 21 sec · Old Milton Parkway
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25
Turn right onto South Main Street
1764 ft · 53 sec · South Main Street
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26
Turn right onto Academy Street
42 m · 4 sec · Academy Street
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27
Arrive at your destination
0 m · 1 sec · Academy Street
Car Route Details
A richer read on the saved driving route between Saint Simon Mills and Alpharetta.
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
156 mi · 02h 47m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Partly Sunny leaving Saint Simon Mills and Slight Chance Rain Showers near Alpharetta.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Saint Simon Mills to Alpharetta?
The road trip is about 340 miles (547.1 km) and usually takes 05h 26m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
East Dublin is a useful midpoint, sitting about 168.3 miles from Saint Simon Mills and 171.6 miles from Alpharetta.
How much longer is the road route than the straight-line distance?
The direct path is about 261.7 miles (421.1 km), while the road route adds roughly 78.3 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 8:00 AM EDT. If you want a more comfortable same-day return, try to leave by 6:08 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $47.53 one way or $95.06 round trip. Estimated CO2 is about 106.6 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Saint Simon Mills and Slight Chance Rain Showers near Alpharetta.
Flight Path Map
This map shows the direct air route between Saint Simon Mills and Alpharetta. Straight-line distance: 261.69 mi (421.15 km).
#1 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 |
#2 Alpharetta
The most populous city in Fulton County, Georgia.
| Population | 67,897 |
| Coordinates | 34.0753800, -84.2940900 |
| Altitude | 347 |
| Country | United States |
End: Academy Street (-84.29408, 34.075615)
Estimated Travel Time
Distance: 547 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 19m |
| 40 mph (64.37 km/h) | 08h 29m |
| 50 mph (80.47 km/h) | 06h 47m |
| 60 mph (96.56 km/h) | 05h 39m |
| 70 mph (112.65 km/h) | 04h 51m |
| 80 mph (129 km/h) | 04h 14m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.96 | $47.53 | $95.06 |
| Mid-grade | $4.43 | $53.15 | $106.30 |
| Premium | $4.78 | $57.34 | $114.67 |
| Diesel | $5.62 | $67.49 | $134.98 |
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.