Traveling from Ardmore to Johnson City spans 338.2 miles across Tennessee, typically requiring about 6 hours and 31 minutes of drive time. Because this route is primarily highway-focused, you can comfortably complete the journey in a single day. Budgeting approximately $51 for fuel should cover your transit across the state. You will rely heavily on I-75, US-72, and I-81 to navigate from the southern border toward the northeast. Whether you are traveling for business or a change of scenery, this direct path is efficient and straightforward for those looking to cross the state in one go.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
169.1 miles from Ardmore, TN
A natural place for your longest stop of the day
, about 3h 23m into the drive
.
Main Roads
Road
Distance
Duration
I 75
99.2 mi
1h 49m
US 72
72.6 mi
1h 25m
I 81
56.6 mi
1h
I 40
36.7 mi
40m
I 24
33.1 mi
38m
AL 53
16.9 mi
23m
James H. Quillen Parkway
14 mi
16m
Main Street
3.9 mi
6m
Longest stretch:
I 75
— 99.2 mi, about 1h 49m
Turn-by-Turn Driving Directions
Step-by-step road directions between Ardmore, TN and Johnson City, TN.
1
Start on TN 7
3.9 mi·6 min·Main Street
2
Continue on AL 53
17 mi·23 min·AL 53
3
Turn left onto Sparkman Drive Northwest
3.1 mi·5 min·Sparkman Drive Northwest
Use the straight lane.
4
Continue on US 72
1.7 mi·2 min·US 72
Use the straight lane.
5
Keep slight left at fork onto US 72
71 mi·1 hr 22 min·US 72
Toward US 72 East: Scottsboro
6
Take the exit
0.2 mi·26 sec
Toward I-24 East: Chattanooga
7
Merge onto I 24
33 mi·38 min·I 24
8
Keep slight left at fork
0.9 mi·1 min
Exit 185 BToward I 75 North: KnoxvilleUse the slight left / slight right lanes.
9
Merge onto I 75
99 mi·1 hr 49 min·I 75
Use the straight lane.
10
Keep slight left at fork onto I 40
37 mi·40 min·I 40
Use the straight / slight right lanes.
11
Keep slight left at fork onto I 81
57 mi·1 hr·I 81
Exit 421Toward I 81 North: Bristol
12
Take the exit
0.4 mi·40 sec
Exit 57AToward I 26 East, US 23 South: Johnson City, Asheville
13
Merge onto I 26; US 23
14 mi·16 min·James H. Quillen Parkway
14
Take the exit
0.1 mi·15 sec
Exit 23Toward TN 91
15
Turn right onto SR 91
0.3 mi·38 sec·East Market Street
16
Turn left onto Buffalo Street
0.2 mi·32 sec·Buffalo Street
Use the left / straight lanes.
17
Turn right
433 ft·31 sec
18
Arrive at destination
Trip Plan
To make the most of your 6.5-hour trek, plan for at least one dedicated stop to stretch your legs and refresh your focus. Leaving early in the morning is your best strategy to avoid peak traffic congestion on the busier stretches of I-75 and I-81. Keep a close eye on your fuel gauge during the longer segments, as the 99.2-mile stretch on I-75 can pass quickly without many major exits. Since this is a single-day trip, pack your own snacks and drinks to maintain your momentum and avoid unnecessary delays. Flexibility is your biggest advantage here, so use your single stop strategically to break up the monotony of the interstate segments.
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.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 169.1 miles from Ardmore, TN, or about 3h 23m into the drive.
The longest continuous stretch on this route runs about 99.2 miles.
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 74 miles or 1h 34m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 169.1 miles or 3h 23m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 5h 23m
Traffic, exits, and arrival timing usually matter more near Johnson City, TN than in the middle of the route.
Before You Leave
+
Open the route before leaving Ardmore, 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 Ardmore, TN
This is one driving day of about 338.2 miles and 6h 31m.
Your first comfortable stop window is around 74 miles from Ardmore, TN.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on I 75 for about 99.2 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 13
5 decision points cluster between mile 25.5 and 323.1 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
25.5 mi into trip|~37m in|US 72
Keep slight left at fork onto US 72 toward US 72 East: Scottsboro
Highway fork - watch signs carefully
Toward US 72 East: Scottsboro
8
129.7 mi into trip|~2h 39m in
Keep slight left at fork toward I 75 North: Knoxville
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / slight right lanes.
Exit 185 B
Toward I 75 North: Knoxville
6
229.8 mi into trip|~4h 30m in|I 40
Keep slight left at fork onto I 40
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
6
266.5 mi into trip|~5h 11m in|I 81
Keep slight left at fork onto I 81 toward I 81 North: Bristol
Highway fork - watch signs carefully
Exit 421
Toward I 81 North: Bristol
6
323.1 mi into trip|~6h 11m in
Take the exit toward I 26 East, US 23 South: Johnson City, Asheville
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Exit 57A
Toward I 26 East, US 23 South: Johnson City, As...
Fuel & Cost
Regular Gas
$52.87 one way
$105.75 round trip
$3.97/gal25.4 MPG avg118 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.36
$58.05
$116.11
premium
$4.89
$65.08
$130.17
diesel
$5.61
$74.67
$149.34
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$53
Meals
$25–$50
Total
$78–$103
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 118.3 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $36 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
101.5
1
$35.51
$16.23
Efficient EV
84.6
0
$29.59
$13.53
EV Truck/SUV
135.3
1
$47.35
$21.64
Gas CO2
118 kg
EV CO2
40 kg (66% 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 Apr 14, 2026
Origin
Ardmore, TN
Late night
in Ardmore on Tuesday
Local time
5:43 AM
CDT
Current temp
78°F
Unavailable
Live forecast
Destination
Johnson City, TN
Morning
in Johnson City on Tuesday
Local time
6:43 AM
EDT
Current temp
53°F
Mostly Clear
0 mph2% chanceLive forecast
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
1 hour later
The destination clock does not match departure time, so double-check hotel check-in windows and late arrival plans.
Temperature spread
25 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
6h 31m on the road
Start early — leave by 6-7 AM to arrive at a reasonable hour.
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.
Great Smoky Mountains National Park
National Park
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...
28 mi from route
~69 min detour
Free
near mile 256.6
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
Expect a trip dominated by high-speed travel, as 97% of your journey takes place on major highways. You will settle into a steady rhythm on the interstate, with your longest uninterrupted stretch covering 99.2 miles along I-75. The experience is largely a highway-focused drive, moving away from local roads to prioritize speed and connectivity. While the transition between I-75 and I-81 keeps you moving, the consistent road quality allows for a predictable pace behind the wheel. Prepare for a focused, efficient drive that minimizes stop-and-go traffic in favor of consistent interstate cruising.
97% 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: 99.2 mi on I 75.
How Hard Is This Drive?
9/10
This is a straightforward highway drive that stays mostly on I 75 and US 72. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 25.5 miles in near US 72.
Driving Effort9/10
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 13 significant decision points across 338.2 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 25.5 miles (US 72): Highway fork - watch signs carefully; at 129.7 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 229.8 miles (I 40): Highway fork - watch signs carefully. Lane positioning matters here.
Doable as a same-day drive at 6h 31m. Total distance: 338.2 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
6h 31m drive, plan rest stops for pacing.
Frequently Asked Questions
The longest stretch is about 99.2 miles on I 75. The full list of main roads is in the Roads section above.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
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 Johnson 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 1 meaningful breaks. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 25.5 miles (US 72): Highway fork - watch signs carefully; at 129.7 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 229.8 miles (I 40): Highway fork - watch signs carefully. Lane positioning matters here.
Yes — Great Smoky Mountains National Park. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 6.5 hours each way, a round trip means 13.0 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Johnson City, TN before the return drive.
