Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Sep 5, 2026 · Editorial standards
Drive Time
42m
Distance
27.8 mi
45 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$4
one way
EV Charging
Unknown
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Marietta, GA
Wikimedia Commons
Conley, GA
Vitaliy Mitrofanenko
The drive from Marietta, GA to Conley, GA covers 27.8 miles and takes about 42m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on Horace E Tate Freeway, Larry McDonald Memorial Highway, Moreland Avenue Southeast for much of the mileage, and the overall profile is mixed highway & surface. The longest uninterrupted segment is about 7.3 miles on Horace E Tate Freeway. At current regular gas prices, budget about $4.26 one way before food or hotel costs.
| Road | Distance | Duration |
|---|---|---|
| Horace E Tate Freeway | 7.3 mi | 8m |
| Larry McDonald Memorial Highway | 5.2 mi | 5m |
| Moreland Avenue Southeast | 4.2 mi | 7m |
| Boulevard Southeast | 2.9 mi | 5m |
| Downtown Connector | 2 mi | 2m |
| Roswell Street | 1.7 mi | 3m |
| McDonough Boulevard Southeast | 1.3 mi | 2m |
| Cobb Parkway South | 0.7 mi | 1m |
Hour-of-day weekday pattern from 107 FHWA count stations on your route.
Peak
7 AM
~7,415 veh/hr typical
Quietest
2 AM
~960 veh/hr
Peak-to-quiet ratio
7.7×
busier at peak than in the quiet hours
Averaged across 103 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Step-by-step road directions between Marietta, GA and Conley, GA.
Start on West Park Square
Continue on South Park Square
Continue on Roswell Street
Turn right onto US 41; GA 3
Turn left onto GA 120
Take the exit
Merge onto I 75
Continue on I 75
Continue on I 75; I 85
Take the exit
Merge onto GA 10
Turn right onto Boulevard Northeast
Continue on Boulevard Southeast
Turn left onto GA 42 Spur
Turn slight right
Merge onto US 23; GA 42
Continue on US 23; GA 42
Turn left onto East Conley Road
Arrive at destination
5 decision points cluster between mile 0 and 17.9 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
Continue onto South Park Square
Lane positioning matters here
Turn right onto US 41; GA 3 / Cobb Parkway South
Lane positioning matters here
Take the exit toward I 75 South: Atlanta
Exit ramp - move to the correct lane early. Lane positioning matters here
Merge onto I 75 / Larry McDonald Memorial Highway
Merge point - match speed before joining. Lane positioning matters here
Take the exit toward GA 10 East: John Lewis, Freedom Parkway, Carter Center
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Regular Gas
$4.26 one way
$8.52 round trip
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.27 | $4.67 | $9.35 |
| premium | $4.64 | $5.08 | $10.15 |
| diesel | $5.60 | $6.13 | $12.26 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$4
Estimated CO2 emission: 9.7 kg one way. Prices: EIA weekly data, 2026-08-31.
Driving Electric?
About $3 in charging · 0 stops · 70% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 8.3 | 0 | $2.92 | $1.33 |
| Efficient EV | 7 | 0 | $2.43 | $1.11 |
| EV Truck/SUV | 11.1 | 0 | $3.89 | $1.78 |
Gas CO2
10 kg
EV CO2
3 kg (70% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Current conditions at both ends of the drive.
Origin
Evening in Marietta on Saturday
Local time
6:58 PM
EDT
Current temp
70°F
Mostly Clear
Destination
Evening in Conley on Saturday
Local time
6:58 PM
EDT
Current temp
72°F
Partly Cloudy
Time zone
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
27.8 mi in 42m — 31% highway, the rest on surface roads. Biggest road: Horace E Tate Freeway.
This route mixes highway mileage with some local-road sections near the start or finish. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes early in the drive near South Park Square.
Focused - busy navigation packed into a short drive
Balances navigation complexity with total wheel time.
This is a short but busy drive. With 11 decision points packed into just 27.8 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 42m.
Where does it get tricky?
The main spots that need attention: near the start (South Park Square): Lane positioning matters here; at 1.7 miles (US 41; GA 3 / Cobb Parkway South): Lane positioning matters here; at 3.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Mostly flat terrain
Total Climb
191 ft
Total Descent
463 ft
Highest Point
1,124 ft
Elevation Range
272 ft
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Marietta, GA to Conley, GA, road signs begin pointing toward Carter Center along the way.
Carter Center
Founded 1834
Marietta is a city of 61,000 people (2019) in Metro Atlanta. It is the fourth largest city in the state. Dobbins Air Reserve Base on the south side of town and a Lockheed Martin manufacturing plant are among the major industries in the city.
Top landmarks
City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).
Weekend Trip
Doable as a same-day drive at 42m. Total distance: 27.8 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
42m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (31%). Some complex stretches to watch for.
Scenic Drive
Mixed highway & surface route profile with national parks nearby.
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, USGS 3DEP for elevation, NPS for national parks, and FHWA TMAS for hourly traffic volumes. See our methodology for refresh cadence and limitations.
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