How far is Smyrna, GA from McDonough, GA?
The driving distance from Smyrna, GA to McDonough, GA is about 56.6 miles (91.1 km), with a travel time of about 01h 15m by car.
- The straight-line flight distance is about 44 miles (70.8 km).
- For a round trip, plan for roughly 02h 31m 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 15m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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 and the county seat of Newton 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 McDonough.
Turn-by-Turn Driving Directions
Step-by-step road directions between Smyrna and McDonough.
-
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
4.2 mi · 6 min · Madison Bypass
-
4
Continue on Eatonton Road
3165 ft · 1 min · Eatonton Road
-
5
Take the exit right toward I 20 West: Atlanta
2122 ft · 26 sec
-
6
Continue on Purple Heart Highway
20.3 mi · 22 min · Purple Heart Highway
-
7
Take the exit slight right toward GA 142: Covington, Oxford
1547 ft · 40 sec
-
8
Turn left onto John R. Williams Highway
1.1 mi · 2 min · John R. Williams Highway
-
9
Continue on Dr. Martin Luther King, Junior Avenue
2.5 mi · 4 min · Dr. Martin Luther King, Junior Avenue
-
10
Continue on Covington Bypass Road
3.6 mi · 5 min · Covington Bypass Road
-
11
Turn left onto South Broad Street
150 m · 12 sec · South Broad Street
-
12
Continue on Highway 81 South
1.2 mi · 2 min · Highway 81 South
-
13
Enter the roundabout and take exit 2 toward Highway 81 South
52 m · 6 sec · Highway 81 South
-
14
Exit the roundabout onto Highway 81 South
6.1 mi · 8 min · Highway 81 South
-
15
Continue on Highway 81 East
1.6 mi · 2 min · Highway 81 East
-
16
Turn right onto Keys Road
38 m · 4 sec · Keys Road
-
17
Continue on Keys Road
16 m · 2 sec · Keys Road
-
18
Continue on Keys Road
30 m · 3 sec · Keys Road
-
19
Turn straight onto Highway 81 East
10.4 mi · 14 min · Highway 81 East
-
20
Continue on John Frank Ward Boulevard
1.1 mi · 3 min · John Frank Ward Boulevard
-
21
Turn left onto Atlanta Street
42 m · 3 sec · Atlanta Street
-
22
Arrive at your destination
0 m · 1 sec · Atlanta Street
Car Route Details
A richer read on the saved driving route between Smyrna and McDonough.
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
20.3 mi · 00h 22m
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 Smyrna and Sunny near McDonough.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Smyrna to McDonough?
The road trip is about 56.6 miles (91.1 km) and usually takes 01h 15m 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?
Covington is a useful midpoint, sitting about 28.3 miles from Smyrna and 28.3 miles from McDonough.
How much longer is the road route than the straight-line distance?
The direct path is about 44 miles (70.8 km), while the road route adds roughly 12.6 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 3:58 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.92 one way or $15.84 round trip. Estimated CO2 is about 17.8 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Smyrna and Sunny near McDonough.
Stop Ideas Near Covington
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 Covington.
Peachtree Station
Gainesville
Flight Path Map
This map shows the direct air route between Smyrna and McDonough. Straight-line distance: 43.99 mi (70.8 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 McDonough
City in and the county seat of Henry County, Georgia, United States
| Population | 27,582 |
| Coordinates | 33.4473400, -84.1468600 |
| Altitude | 264 |
| Country | United States |
End: McDonough (-84.14686, 33.44734)
Estimated Travel Time
Distance: 91 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 53m |
| 40 mph (64.37 km/h) | 01h 24m |
| 50 mph (80.47 km/h) | 01h 07m |
| 60 mph (96.56 km/h) | 00h 56m |
| 70 mph (112.65 km/h) | 00h 48m |
| 80 mph (129 km/h) | 00h 42m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.96 | $7.92 | $15.84 |
| Mid-grade | $4.43 | $8.86 | $17.72 |
| Premium | $4.78 | $9.56 | $19.11 |
| Diesel | $5.62 | $11.25 | $22.50 |
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 05, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.