via I-85
The drive from Atlanta to Marietta takes approximately 30 min, covering 20 miles via I-85. Under normal conditions, expect to spend around $2 on gas.
Travel time can vary — during rush hour or bad weather, the journey may take 45–51 minutes. For the fastest trip, avoid peak commute hours.
Traffic is usually worst during weekday rush hours (7–9 AM, 4–7 PM) and holiday weekends.
For this shorter drive, the best time to go is late evening (8-10 pm). Rush hour (7-9 AM and 4-7 PM) can add significant time on this route. Weekends are generally smoother unless it's a holiday.
Connects the Southeast. Heavy traffic around Atlanta is common during rush hours.
This trip can typically be done on a single tank of gas.
The short drive from Atlanta to Marietta follows I-85 for 20 miles, with an estimated travel time of 30 min under normal conditions. Fuel costs run approximately $2 at current prices, assuming average fuel efficiency of 30 MPG. Late evening (8-10 pm) is generally the best window to depart for the smoothest ride.
At just 20 miles, this is a comfortable day trip that won't require any fuel stops along the way. You can easily make the round trip in a single day with plenty of time to spare.