How far is Marietta, GA from Smyrna, GA?
The driving distance from Marietta, GA to Smyrna, GA is about 86.1 miles (138.6 km), with a travel time of about 01h 25m by car.
- The straight-line flight distance is about 70.2 miles (112.9 km).
- For a round trip, plan for roughly 02h 50m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM EDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 01h 25m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in Rockdale County, Georgia, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Driving Route Map
The map below follows the saved road route between Marietta and Smyrna.
Turn-by-Turn Driving Directions
Step-by-step road directions between Marietta and Smyrna.
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1
Start on West Park Square
36 m · 11 sec · West Park Square
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2
Continue on South Park Square
105 m · 9 sec · South Park Square
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3
Continue on Roswell Street
1.6 mi · 4 min · Roswell Street
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4
Turn right onto Cobb Parkway South
1.1 km · 1 min · Cobb Parkway South
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5
Turn left onto South Marietta Parkway
1 km · 1 min · South Marietta Parkway
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6
Take the exit slight right toward I 75 South: Atlanta
2479 ft · 53 sec
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7
Merge slight left onto Larry McDonald Memorial Highway
5.2 mi · 6 min · Larry McDonald Memorial Highway
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8
Continue on Horace E Tate Freeway
7.3 mi · 9 min · Horace E Tate Freeway
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9
Continue on Downtown Connector
3.2 mi · 4 min · Downtown Connector
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10
Take the exit slight right toward I 20: Augusta, Birmingham
1465 ft · 36 sec
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11
Keep slight left to continue on I 20 East: Augusta
3268 ft · 1 min
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12
Merge slight left onto Ralph David Abernathy Freeway
9.7 mi · 12 min · Ralph David Abernathy Freeway
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13
Continue on Purple Heart Highway
45.3 mi · 49 min · Purple Heart Highway
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14
Take the exit slight right toward GA 83: Madison, Monticello
1939 ft · 54 sec
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15
Turn left onto Monticello Highway
1.5 mi · 3 min · Monticello Highway
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16
Turn slight right
2002 ft · 38 sec
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17
Keep slight left to continue on South Main Street
2436 ft · 59 sec · South Main Street
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18
Turn left onto Eatonton Road
48 m · 4 sec · Eatonton Road
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19
Turn straight onto South Main Street
2.2 mi · 5 min · South Main Street
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20
Continue on Greensboro Road
3 mi · 4 min · Greensboro Road
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21
Turn right onto Buckhead Road
31 m · 3 sec · Buckhead Road
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22
Arrive at your destination
0 m · 1 sec · Buckhead Road
Car Route Details
A richer read on the saved driving route between Marietta and Smyrna.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Purple Heart Highway
Continue on Purple Heart Highway
45.3 mi · 00h 49m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Sunny leaving Marietta and Sunny near Smyrna.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Marietta to Smyrna?
The road trip is about 86.1 miles (138.6 km) and usually takes 01h 25m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Conyers is a useful midpoint, sitting about 41.6 miles from Marietta and 44.6 miles from Smyrna.
How much longer is the road route than the straight-line distance?
The direct path is about 70.2 miles (112.9 km), while the road route adds roughly 15.9 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 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 3:40 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $12.04 one way or $24.08 round trip. Estimated CO2 is about 27 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Marietta and Sunny near Smyrna.
Stop Ideas Near Conyers
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 Conyers.
Peachtree Station
Gainesville
Toccoa
Flight Path Map
This map shows the direct air route between Marietta and Smyrna. Straight-line distance: 70.17 mi (112.93 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 Smyrna
The most populous city in Cobb County, Georgia.
| Population | 56,443 |
| Coordinates | 33.5981800, -83.4048900 |
| Altitude | 188 |
| Country | United States |
End: Buckhead Road (-83.404891, 33.598175)
Estimated Travel Time
Distance: 139 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 52m |
| 40 mph (64.37 km/h) | 02h 09m |
| 50 mph (80.47 km/h) | 01h 43m |
| 60 mph (96.56 km/h) | 01h 26m |
| 70 mph (112.65 km/h) | 01h 13m |
| 80 mph (129 km/h) | 01h 04m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.96 | $12.04 | $24.08 |
| Mid-grade | $4.43 | $13.46 | $26.93 |
| Premium | $4.78 | $14.53 | $29.05 |
| Diesel | $5.62 | $17.10 | $34.19 |
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 17, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.