Origin
Union City, GA
Morning in Union City on Sunday
Local time
6:27 AM
EDT
Current temp
51°F
Unavailable
Live forecast
Trip from Union City, GA to Dunwoody, GA
Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
Drive Time
49m
Distance
33.7 mi
54 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$5
one way
EV Charging
Unknown
Best Time to Leave
4 AM
0h 45m
★
6 AM
0h 49m
8 AM
0h 57m
10 AM
0h 52m
12 PM
0h 51m
3 PM
0h 53m
5 PM
0h 57m
8 PM
0h 47m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Union City, GA
Wikimedia Commons
Dunwoody, GA
Wikimedia Commons
Trip Overview
Union City to Dunwoody is 33.7 miles and takes about 49 minutes via I 85, with a fuel budget near $5 and enough daylight to finish in a day. This trip takes you across Georgia's Southeast region, staying within the state. It's a fairly straightforward drive, mostly on highways, making it a convenient option for a quick journey. You'll likely encounter moderate traffic, especially during peak hours, but the relatively short distance means you can easily fit it into your schedule. Consider this route for a practical and efficient transfer between these two points.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 85 | 18.3 mi | 23m |
| T Harvey Mathis Parkway | 7.1 mi | 8m |
| Northeast Expressway | 2.7 mi | 3m |
| Flat Shoals Road | 1.8 mi | 4m |
| Mount Vernon Road | 0.9 mi | 2m |
| Turner McDonald Parkway | 0.5 mi | <1m |
| Mount Vernon Highway | 0.5 mi | 1m |
| Abernathy Road Northeast | 0.3 mi | <1m |
Longest stretch:
I 85
— 18.3 mi, about 23m
Turn-by-Turn Driving Directions
Step-by-step road directions between Union City, GA and Dunwoody, GA.
1
Start on Bantry Circle
267 ft
·
18 sec
·
Bantry Circle
2
Turn left onto Limerick Drive
0.1 mi
·
29 sec
·
Limerick Drive
3
At end of road, turn left onto Kilkenny Drive
205 ft
·
11 sec
·
Kilkenny Drive
4
Turn right onto Bally Shannon Drive
498 ft
·
27 sec
·
Bally Shannon Drive
5
Turn left onto Flat Shoals Road
1.8 mi
·
4 min
·
Flat Shoals Road
6
Take the ramp
0.4 mi
·
45 sec
Toward I 85 North: Atlanta
Use the left lane.
7
Merge onto I 85
18 mi
·
23 min
·
I 85
Use the straight / slight right lanes.
8
Keep slight left at fork onto I 85
2.7 mi
·
3 min
·
Northeast Expressway
Exit 251B
Toward I 85 North: Greenville
9
Keep slight right at fork onto GA 400
7.1 mi
·
8 min
·
T Harvey Mathis Parkway
Exit 87
Toward GA 400 North: Buckhead, Cumming
Use the straight / slight right lanes.
10
Continue on GA 400
0.5 mi
·
44 sec
·
Turner McDonald Parkway
Use the right lane.
11
Take the exit
0.9 mi
·
1 min
Toward Abernathy Road, Dunwoody, Sandy Springs
Use the straight / slight right lanes.
12
Keep slight right at fork
314 ft
·
4 sec
Toward Dunwoody
Use the slight right lane.
13
Turn straight onto Abernathy Road Northeast
0.3 mi
·
29 sec
·
Abernathy Road Northeast
Use the straight lane.
14
Turn left onto Mount Vernon Highway
0.5 mi
·
1 min
·
Mount Vernon Highway
Use the left lane.
15
Continue on Mount Vernon Road
0.9 mi
·
2 min
·
Mount Vernon Road
16
Turn sharp left
90 ft
·
2 sec
17
Turn right
79 ft
·
5 sec
18
Arrive at destination
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
17 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 33.7 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 16.8 miles from Union City, GA, which is a good place for a longer meal and fuel stop.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Heads-up: tricky spots
5 of 145 decision points cluster between mile 0.2 and 31.9 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
0.2 mi into trip
|
~0m in
|
Kilkenny Drive
At end of road, turn left onto Kilkenny Drive
Complex interchange - multiple decisions in a short stretch
6
2.1 mi into trip
|
~5m in
Take the ramp toward I 85 North: Atlanta
Lane positioning matters here
Use the left lane.
Toward I 85 North: Atlanta
9
23.4 mi into trip
|
~33m in
|
GA 400 / T Harvey Mathis Parkway
Keep slight right at fork onto GA 400 / T Harvey Mathis Parkway toward GA 400 North: Buckhead, Cumming
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 87
Toward GA 400 North: Buckhead, Cumming
7
31 mi into trip
|
~43m in
Take the exit toward Abernathy Road, Dunwoody, Sandy Springs
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward Abernathy Road, Dunwoody, Sandy Springs
7
31.9 mi into trip
|
~45m in
Keep slight right at fork toward Dunwoody
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
Toward Dunwoody
Fuel & Cost
Regular Gas
$5.27 one way
$10.54 round trip
$3.97/gal
25.4 MPG avg
12 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.34 | $5.76 | $11.52 |
| premium | $4.70 | $6.24 | $12.47 |
| diesel | $5.61 | $7.44 | $14.88 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$5
Estimated CO2 emission: 11.8 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $4 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 10.1 | 0 | $3.54 | $1.62 |
| Efficient EV | 8.4 | 0 | $2.95 | $1.35 |
| EV Truck/SUV | 13.5 | 0 | $4.72 | $2.16 |
Gas CO2
12 kg
EV CO2
4 kg (67% 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.
Travel Intel
Current conditions at both ends of the drive.
Destination
Dunwoody, GA
Morning in Dunwoody on Sunday
Local time
6:27 AM
EDT
Current temp
56°F
Unavailable
Live forecast
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
5 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
49m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
What kind of drive is this?
This drive is predominantly highway-focused, with 85% of the route utilizing major highways like I 85 and the Northeast Expressway. Expect a fast-paced experience for the majority of your trip. The longest uninterrupted stretch you'll encounter is 18.3 miles on I 85, offering a chance to settle into a steady pace. While the profile is largely highway, there are brief transitions onto roads like T Harvey Mathis Parkway, which may offer a slight change of scenery or pace before rejoining the main thoroughfares. Overall, it’s a drive characterized by efficiency and speed.
85% highway — fuel and pacing are the main things to plan.
18 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 18.3 mi on I 85.
How Hard Is This Drive?
9/10
This is a straightforward highway drive that stays mostly on I 85 and T Harvey Mathis Parkway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.2 miles in near Kilkenny Drive.
Driving Effort
9/10
Focused - lots of decisions in a short distance, but it is over quickly
Balances navigation complexity with total wheel time.
This is a short but busy drive. With 14 decision points packed into just 33.7 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 49m.
Where does it get tricky?
The main spots that need attention: at 0.2 miles (Kilkenny Drive): Complex interchange - multiple decisions in a short stretch; at 2.1 miles: Lane positioning matters here; at 23.4 miles (GA 400 / T Harvey Mathis Parkway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Union City, GA and Dunwoody, GA, road signs point toward Cumming and Sandy Springs.
Cumming
23.4 mi in
|
~33m
|
via GA 400
Sandy Springs
31 mi in
|
~43m
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 49m. Total distance: 33.7 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
49m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (85%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 18.3 miles on I 85. The full list of main roads is in the Roads section above.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Dunwoody, GA before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
The main spots that need attention: at 0.2 miles (Kilkenny Drive): Complex interchange - multiple decisions in a short stretch; at 2.1 miles: Lane positioning matters here; at 23.4 miles (GA 400 / T Harvey Mathis Parkway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — Martin Luther King, Jr. National Historical Park and Chattahoochee River National Recreation Area. See the National Parks section for detour distances and tips on detours.
Yes. A round trip is manageable in a single day if you plan a break at Dunwoody, GA before heading back.
How this page is built
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, and NPS for national parks. See our methodology for refresh cadence and limitations.
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