Spanning 463.3 miles across Tennessee, this trek from Johnson City to Union City is a substantial journey that requires careful planning. While the clock shows a driving time of 8 hours and 30 minutes, the local road focus means you should realistically budget for two days to complete the trip comfortably. You will navigate through the Southeast region, transitioning from the eastern edge of the state toward the west. Anticipate a fuel budget of approximately $70 to cover the distance. Because this route relies heavily on local streets rather than major interstates, it is best approached as a multi-day excursion rather than a rushed single-day push.
Trip Pace
Best split across 2 days
Treat the return leg as its own travel day rather than an afterthought.
Break Rhythm
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
231.6 miles from Johnson City, TN
A natural place for your longest stop of the day
, about 4h 15m into the drive
.
Main Roads
Road
Distance
Duration
I 40
209.8 mi
3h 49m
I 24
115.2 mi
2h 4m
I 81
57.1 mi
1h 1m
I 69
51.9 mi
55m
James H. Quillen Parkway
13.7 mi
16m
US 45W
8.8 mi
10m
Downtown Loop
2.3 mi
3m
North Clover Street
1 mi
1m
Longest stretch:
I 40
— 209.8 mi, about 3h 49m
Traffic on I-24
Hour-of-day weekday pattern from 4 FHWA count stations on your route.
Peak
3 PM
~1,181 veh/hr typical
· worst 1,565
Quietest
2 AM
~158 veh/hr
Peak-to-quiet ratio
7.5×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 16 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Johnson City, TN and Union City, TN.
1
Start on this road
433 ft·35 sec·this road
2
Turn left onto Buffalo Street
0.3 mi·56 sec·Buffalo Street
Use the straight lane.
3
Turn left onto North Roan Street
0.3 mi·36 sec·North Roan Street
Use the left lane.
4
Turn right onto SR 400
0.3 mi·45 sec·East Watauga Avenue
5
Turn left onto Oak Street
441 ft·10 sec·Oak Street
6
Take the ramp
0.2 mi·23 sec
7
Merge onto I 26; US 19W; US 23
14 mi·16 min·James H. Quillen Parkway
8
Take the exit
0.2 mi·37 sec
Exit 8AToward I 81 South: Knoxville
9
Merge onto I 81
56 mi·1 hr·I 81
10
Continue on I 81
0.7 mi·45 sec·I 81
Exit 1BToward I 40 West: Knoxville
11
Merge onto I 40
53 mi·59 min·I 40
Use the straight / slight right lanes.
12
Keep slight right at fork onto I 40
155 mi·2 hr 46 min·I 40
Toward NashvilleUse the straight / slight right lanes.
13
Keep slight right at fork onto I 40
2.1 mi·3 min·I 40
Exit 213BToward I 24 West, I 40 West: NashvilleUse the straight / slight right lanes.
14
Keep slight right at fork onto I 24
0.3 mi·28 sec·I 24
Exit 211Toward I 24 West: Clarksville, LouisvilleUse the slight right lane.
15
Merge onto I 24
2.3 mi·3 min·Downtown Loop
Use the straight / slight right lanes.
16
Continue on I 24
2.1 mi·2 min·I 24
Exit 46AToward I 24 West, I 65 North: Clarksville, LouisvilleUse the straight / slight left lanes.
17
Take the exit onto I 24
113 mi·2 hr 1 min·I 24
Exit 88Toward I 24 West: ClarksvilleUse the slight left / straight lanes.
18
Keep slight left at fork onto I 69
52 mi·55 min·I 69
Exit 25A
19
Take the exit onto US 51
0.2 mi·24 sec·US 51
Toward Union City, Memphis
20
Keep slight left at fork
189 ft·5 sec
Toward Martin
21
Turn right onto US 45W
478 ft·6 sec·US 45W
22
Continue on US 45W; US 51
4.8 mi·5 min·US 45W; US 51
Exit Future I 69
23
Take the exit onto US 51; US 45W
0.6 mi·54 sec·US 51; US 45W
Toward Union City, Troy
24
Continue on US 45W; US 51
4.0 mi·4 min·US 45W; US 51
25
Turn left onto TN 21
1.0 mi·1 min·North Clover Street
Use the straight lane.
26
Turn right onto SR 21
0.4 mi·46 sec·East Cheatham Street
27
Turn left onto SR 21
0.5 mi·51 sec·North Division Street
28
At end of road, turn right onto SR 21
0.2 mi·25 sec·East Main Street
29
At end of road, turn left onto SR 21
117 ft·2 sec·East Main Street
30
Turn straight onto TN 5; TN 21
461 ft·23 sec·South 1st Street
31
Turn left onto East Church Street
74 ft·3 sec·East Church Street
32
Arrive at destination
East Church Street
Trip Plan
To manage the 8-hour and 30-minute travel time effectively, plan for at least two stops along the way to break up the technical driving. Since you are sticking to local roads, give yourself the flexibility to adjust your pace if you encounter congestion or slower-moving traffic. It is wise to keep your fuel budget of $70 in mind, as local routes may have varying availability for gas compared to major interstates. Aim to start your morning early to maximize daylight, as navigating local turns is significantly easier when visibility is high. Keep a close eye on your GPS, as the reliance on streets like East Watauga Avenue requires frequent navigation checks compared to a simple highway route.
Morning Departure
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Evening Departure
This is a long drive — plan for a morning departure or consider splitting it into two days.
This drive is better paced as a 2-day trip.
Plan roughly 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 231.6 miles from Johnson City, TN, or about 4h 15m into the drive.
The longest continuous stretch on this route runs about 209.8 miles.
Consider an overnight stop or starting very early.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 102 miles or 1h 54m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 231.6 miles or 4h 15m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Overnight split
Day 1 wrap after about 231.6 miles or 4h 15m
Stop before fatigue turns the last few hours into a grind. You want day two to start fresh, not just resumed.
Final approach
Final hour starts around 7h 22m
Traffic, exits, and arrival timing usually matter more near Union City, TN than in the middle of the route.
Before You Leave
+
Open the route before leaving Johnson City, 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.
+
Pick one backup stop option before the midpoint in case traffic changes your pacing.
+
Treat this as a 2-day road trip and book the overnight stop before the busiest arrival window.
Day 1
Settle into the route from Johnson City, TN
Aim for roughly 232 miles and 4.3 hours of wheel time on this day.
Day 2
Finish the approach into Union City, TN
Aim for roughly 232 miles and 4.3 hours of wheel time on this day.
Your first comfortable stop window is around 102 miles from Johnson City, TN.
This route usually feels better as a 2-day drive than as one long push.
Plan about 2 real breaks rather than only quick fuel stops.
The longest stretch is on I 40 for about 209.8 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 26
5 decision points cluster between mile 0.4 and 286.8 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
0.4 mi into trip|~1m in|North Roan Street
Turn left onto North Roan Street
Lane positioning matters here
Use the left lane.
7
125.1 mi into trip|~2h 20m in|I 40
Keep slight right at fork onto I 40 toward Nashville
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Toward Nashville
9
279.9 mi into trip|~5h 7m in|I 40
Keep slight right at fork onto I 40 toward I 24 West, I 40 West: Nashville
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 213B
Toward I 24 West, I 40 West: Nashville
9
282 mi into trip|~5h 10m in|I 24
Keep slight right at fork onto I 24 toward I 24 West: Clarksville, Louisville
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 211
Toward I 24 West: Clarksville, Louisville
7
286.8 mi into trip|~5h 17m in|I 24
Take the exit onto I 24 toward I 24 West: Clarksville
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight left / straight lanes.
Exit 88
Toward I 24 West: Clarksville
Fuel & Cost
Regular Gas
$77.03 one way
$154.06 round trip
$4.22/gal25.4 MPG avg162 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.60
$83.90
$167.81
premium
$5.18
$94.54
$189.08
diesel
$5.35
$97.58
$195.17
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$77
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$207–$317
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 162.1 kg one way.
Prices: EIA weekly data, 2026-06-01.
Driving Electric?
About $49 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
139
1
$48.65
$22.24
Efficient EV
115.8
1
$40.54
$18.53
EV Truck/SUV
185.3
2
$64.86
$29.65
Gas CO2
162 kg
EV CO2
54 kg (67% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
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.
Forecast as of Jun 1, 2026
Origin
Johnson City, TN
Afternoon
in Johnson City on Wednesday
Local time
3:56 PM
EDT
Current temp
62°F
Slight Chance Rain Showers
0 mph24% chanceLive forecast
Destination
Union City, TN
Afternoon
in Union City on Wednesday
Local time
2:56 PM
CDT
Current temp
66°F
Patchy Fog
0 mph15% chanceLive forecast
67°F
Baxter, TN
232 mi in
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.
For long drives, weather on day two can matter just as much as conditions at departure, so check the whole travel window rather than only the first day.
Time zone
1 hour earlier
The destination clock does not match departure time, so double-check hotel check-in windows and late arrival plans.
Temperature spread
4 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
8h 30m on the road
This is long enough that the arrival forecast matters almost as much as departure conditions. Recheck both ends before you roll.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
National Parks Near This Route
Worth a detour if your schedule allows.
Stones River National Battlefield
National Battlefield
The Battle of Stones River began on the last day of 1862 and became one of the bloodiest conflicts of the Civil War. The battle produced important military and political gains for the Union, and it ch...
22 mi from route
~55 min detour
Free
near mile 271.6
Brigadier General Ulysses S. Grant was becoming quite famous as he wrote these words following the surrender of Confederate Fort Donelson on Sunday, February 16, 1862. The Union victory at Fort Donels...
28 mi from route
~69 min detour
Free
near mile 351.5
Ridge upon ridge of forest straddles the border between North Carolina and Tennessee in Great Smoky Mountains National Park. World renowned for its diversity of plant and animal life, the beauty of it...
29 mi from route
~71 min detour
Free
near mile 79.9
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
Expect an engaging, turn-heavy experience behind the wheel, as this route avoids major highways entirely. With a 0% highway share, you will spend your time navigating local roads like Buffalo Street, North Roan Street, and East Watauga Avenue. The personality of this drive is defined by constant maneuvering rather than high-speed cruising, making it a technical and demanding route. Because you are avoiding the interstate system, the road surface and traffic patterns will change frequently throughout the 463.3-mile journey. Prepare for a hands-on driving experience that tests your focus across the entire length of the state.
99% highway — fuel and pacing are the main things to plan.
32 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 209.8 mi on I 40.
How Hard Is This Drive?
10/10
This is a straightforward highway drive that stays mostly on I 40 and I 24. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.4 miles in near North Roan Street.
Driving Effort10/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 26 significant decision points across 463.3 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 0.4 miles (North Roan Street): Lane positioning matters here; at 125.1 miles (I 40): Highway fork - watch signs carefully. Lane positioning matters here; at 279.9 miles (I 40): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Elevation Profile
Gently rolling terrain
1,773 ft337 ft
Total Climb
1,464 ft
Total Descent
2,755 ft
Highest Point
1,773 ft
~165.5 mi in
Elevation Range
1,436 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Johnson City, TN and Union City, TN, road signs point toward Nashville and Louisville.
The longest stretch is about 209.8 miles on I 40. The full list of main roads is in the Roads section above.
Yes — a 2-day pace is more comfortable than one long haul. A sensible stopping point is after roughly 232 miles on day one.
Yes — we found about 45 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
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 Union City, TN before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 2 meaningful breaks. There are 45 rest areas along the route for bathroom stops.
The main spots that need attention: at 0.4 miles (North Roan Street): Lane positioning matters here; at 125.1 miles (I 40): Highway fork - watch signs carefully. Lane positioning matters here; at 279.9 miles (I 40): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — Stones River National Battlefield, Fort Donelson National Battlefield and Great Smoky Mountains National Park. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 8.5 hours each way, a round trip means 17.0 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Union City, TN before the return drive.
