Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 17, 2026 · Editorial standards
Drive Time
2h 14m
Distance
107.7 mi
173 km
Drive Score
9/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$17
one way
EV Charging
Unknown
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Chattanooga, TN
Wikimedia Commons
Unionville, TN
Andy Staver
This 107.7-mile drive from Chattanooga, TN to Unionville, TN is a straightforward trip that can easily be completed in a single day, taking approximately 2 hours and 14 minutes. With a fuel cost estimated at $17, it's an economical option for a quick getaway within the Southeast region. The route primarily utilizes I-24, offering a generally mixed driving experience. Given its manageable distance and duration, this trip is ideal for a day excursion, allowing for flexibility in your schedule without the need for an overnight stay.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
53.9 miles from Chattanooga, TN
A natural place for your longest stop of the day , about 1h 2m into the drive .
Weekend Trip
Doable as a same-day drive at 2h 14m. Total distance: 107.7 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
2h 14m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (58%). Some complex stretches to watch for.
The character of this drive is largely defined by its 58% highway share, predominantly on I-24. You'll experience a significant uninterrupted stretch of 61.8 miles on this interstate, which forms the backbone of the journey. Expect a mixed drive profile as you transition between the faster interstate speeds and potentially more local road segments as you approach your destination. This blend means you'll have periods of efficient travel interspersed with moments requiring a bit more attention to local traffic conditions.
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 around 0.3 miles in.
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 12 significant decision points across 107.7 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 0.3 miles: Lane positioning matters here; at 1.3 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 1.7 miles (I 24): Merge point - match speed before joining. Lane positioning matters here.
These are the spots where you need to pay the most attention. Preview them before you drive.
Turn left
Lane positioning matters here
Keep slight right at fork toward 24: Nashville, Birmingham
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Merge onto I 24
Merge point - match speed before joining. Lane positioning matters here
Take the exit toward Arnold Airforce Base, Tullahoma
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Keep slight left at fork toward Arnold Airforce Base, Tullahoma
Highway fork - watch signs carefully. Multiple destination signs - pick the right one
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Chattanooga, TN and Unionville, TN, road signs point toward Arnold Airforce Base and Tullahoma.
Arnold Airforce Base
Tullahoma
| Road | Distance | Duration |
|---|---|---|
| I 24 | 61.8 mi | 1h 10m |
| South Jackson Street | 17.9 mi | 22m |
| Union Street | 11.6 mi | 17m |
| Wattendorf Memorial Highway | 10.6 mi | 14m |
| Wattendorf Highway | 1.7 mi | 2m |
| US 27 | 0.7 mi | <1m |
| Forrest Boulevard | 0.6 mi | 1m |
| Elm Street | 0.5 mi | <1m |
Step-by-step road directions between Chattanooga, TN and Unionville, TN.
Start on TN 8
Turn left
Merge onto US 27
Keep slight right at fork
Merge onto I 24
Take the exit
Keep slight left at fork
Turn left onto Wattendorf Memorial Hwy
Continue on Wattendorf Memorial Highway
Continue on Wattendorf Highway
Continue on Forrest Boulevard
Continue on South Anderson Street
Turn left onto SR 55
Turn right onto US 41A; SR 55; SR 130
Continue on US 41A
Continue on US 41A
Turn left onto Unionville-Chapel Hill Road
Turn right onto Halls Mill Road
Arrive at destination
For this 2-hour, 14-minute drive, you have the flexibility to leave at your leisure. Since there are no designated stops provided in the data, consider breaking up the longest stretch of 61.8 miles on I-24 with a brief rest stop if needed. The estimated fuel cost of $17 is quite reasonable, but it’s always wise to check your fuel gauge before departing Chattanooga. Pay attention to your GPS as you near Unionville, as the route involves South Jackson Street and Union Street, which may require more localized navigation.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 24 miles or 28m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 53.9 miles or 1h 2m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 1h 47m
Traffic, exits, and arrival timing usually matter more near Unionville, TN than in the middle of the route.
Open the route before leaving Chattanooga, TN so your first major turns are already loaded.
Leave with enough water and a charging cable within reach, not packed away.
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Chattanooga, TN
This is one driving day of about 107.7 miles and 2h 14m.
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 53.9 mi from Chattanooga, TN · 1h 2m into the drive
Mid-route town
Meal stop
54 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.
A short stop after about 24 miles helps settle the day before fatigue starts building.
The midpoint is around 53.9 miles from Chattanooga, TN, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before I 24 if your tank is already low. That segment runs about 61.8 miles.
The final approach into Unionville, TN usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Unionville, TN.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Regular Gas
$16.84 one way
$33.68 round trip
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $18.49 | $36.97 |
| premium | $4.89 | $20.73 | $41.45 |
| diesel | $5.61 | $23.78 | $47.56 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$17
Meals
$25–$50
Total
$42–$67
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 37.7 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $11 in charging · 0 stops · 66% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 32.3 | 0 | $11.31 | $5.17 |
| Efficient EV | 26.9 | 0 | $9.42 | $4.31 |
| EV Truck/SUV | 43.1 | 0 | $15.08 | $6.89 |
Gas CO2
38 kg
EV CO2
13 kg (66% 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 Chattanooga on Friday
Local time
6:35 PM
EDT
Current temp
59°F
Mostly Clear
Destination
Evening in Unionville on Friday
Local time
5:35 PM
CDT
Current temp
59°F
Partly Cloudy
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
The destination clock does not match departure time, so double-check hotel check-in windows and late arrival plans.
Temperature spread
Both ends of the route are sitting at about the same temperature right now.
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.
Compiled by the Trip.ovh planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, and EIA for fuel prices. See our methodology for refresh cadence and limitations.
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