Bus
Driving
Decatur to Marietta
Updated: 28 May 2026
The journey from Decatur to Marietta spans approximately 25 miles through the northern Atlanta metropolitan area. Most commuters utilize the I-285 perimeter highway to bypass downtown congestion. Travel times fluctuate significantly based on peak rush hours between 7 AM and 9 AM. Public transit options involve a combination of MARTA rail and CobbLinc bus services. This route connects the historic charm of DeKalb County with the suburban hub of Cobb County.
Total Distance: 40 km driving distance; 32 km straight-line air distance.
Fastest Way
Driving via I-285 during off-peak hours takes approximately 40 minutes.
Cheapest Way
CobbLinc bus at $5.00 is the most cost-effective method for daily commuters.
Compare Decatur to Marietta Routes
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Connecting
|
Direct
|
|
|---|---|---|
| Duration | 1 hour 45 minutes | 45 minutes |
| Avg Price | $5.00 | $5 - $10 in fuel |
| Operator | CobbLinc | Personal Vehicle |
| Route | MARTA to CobbLinc transfer at Arts Center Station | I-285 North to I-75 North |
| Tip | Use the Breeze Card for seamless transfers between transit systems. | Avoid the I-285/I-75 interchange during peak hours to save 20 minutes. |
Travel Tips
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Rush HourAvoid I-285 between 7:30 AM and 9:00 AM to prevent heavy delays.
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ParkingMarietta Square offers free two-hour parking in designated lots.
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Breeze CardPurchase a Breeze Card at any MARTA station for easy bus fare payment.
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NavigationUse real-time traffic apps to check for accidents on the I-285 perimeter.
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WeatherCheck local forecasts as summer thunderstorms can cause sudden traffic slowdowns.
Safety Tips
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Highway SafetyKeep a safe following distance on the I-75 express lanes.
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Night TravelEnsure your vehicle lights are functional for evening drives on unlit suburban roads.
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EmergencyKeep a roadside assistance contact saved in your phone for highway breakdowns.
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Pedestrian SafetyUse marked crosswalks when walking around the busy Marietta Square area.
People Also Ask
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Is there a direct train to Marietta?No, MARTA rail does not extend into Marietta; you must transfer to a bus.
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How long is the drive?The drive typically takes 45 minutes depending on traffic conditions.
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Is parking free in Marietta?Yes, there are several free public parking lots near the historic square.
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What is the best time to leave?Leaving before 7 AM or after 10 AM avoids the worst of the Atlanta traffic.
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Are there tolls?The I-75 Northwest Corridor Express Lanes require a Peach Pass for access.
Quick Info
- From Decatur, Georgia, United States
- To Marietta, Georgia, United States
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Modes
Best Time to Travel
Spring months of April and May offer mild weather for exploring the Marietta Square.
Things to Do in Marietta
1
Marietta Square
Visit the historic town square featuring local boutiques and restaurants. It serves as the cultural heart of the city.
2
Gone with the Wind Museum
Explore memorabilia from the famous novel and film. The collection is housed in the historic Brumby Hall.
3
Kennesaw Mountain National Battlefield
Hike the trails of this Civil War site located just minutes from downtown Marietta. It offers panoramic views of the Atlanta skyline.
4
Marietta Fire Museum
View antique fire trucks and equipment dating back to the mid-century. Admission is free for all visitors.
Tags
Decatur to Marietta drive
I-285 traffic
commuting in Atlanta
Decatur to Marietta bus
Georgia travel guide
Marietta square parking
Atlanta metro transit
driving in Georgia
