This 450.1-mile drive from South Fulton, TN to Johnson City, TN is a substantial journey, estimated to take about 8 hours and 13 minutes of pure driving. Given the duration, it's best split over two days, allowing for a more relaxed pace and time to rest. The route is almost entirely on highways, covering 99% of the total distance, and you can expect a fuel cost of around $70. Both your starting point and destination are within the Southeast region, so you'll be experiencing consistent regional characteristics throughout your trip. This highway-focused drive is designed for efficiency, getting you from point A to point B with minimal fuss.
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
225 miles from South Fulton, TN
A natural place for your longest stop of the day
, about 4h 4m into the drive
.
Main Roads
Road
Distance
Duration
I 69
161.1 mi
2h 52m
I 40
129.9 mi
2h 23m
I 24
85.7 mi
1h 34m
I 81
56.6 mi
1h
James H. Quillen Parkway
14 mi
16m
Kentucky Avenue
0.4 mi
<1m
East Market Street
0.3 mi
<1m
Martin L King Jr Drive
0.3 mi
<1m
Longest stretch:
I 69
— 161.1 mi, about 2h 52m
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 South Fulton, TN and Johnson City, TN.
1
Start on SR 43
0.1 mi·11 sec·Broadway Street
2
Continue on KY 307
446 ft·11 sec·Commercial Avenue
3
Turn right onto KY 307
0.2 mi·20 sec·Lake Street
4
Turn right onto KY 307
0.2 mi·27 sec·Mears Street
5
Turn left onto Martin L King Jr Drive
0.3 mi·27 sec·Martin L King Jr Drive
6
Continue on KY 307
0.1 mi·10 sec·Mayfield Road
7
Turn left onto KY 307
242 ft·4 sec·Fulgham Road
8
Continue on KY 307
0.4 mi·41 sec·Kentucky Avenue
9
Take the ramp
0.3 mi·37 sec
10
Merge onto I 69
48 mi·51 min·I 69
11
Keep slight left at fork onto I 69
113 mi·2 hr 1 min·I 69
Toward I 24 East, I 69 North: Nashville, HendersonUse the straight / slight right lanes.
12
Keep slight right at fork onto I 24
2.3 mi·3 min·I 24
Exit 44AToward I 24 East, I 65 South: NashvilleUse the straight / slight left lanes.
13
Continue on I 24
2.8 mi·3 min·I 24
Exit 86Toward I 24 East: Chattanooga, KnoxvilleUse the straight / slight right lanes.
14
Keep slight left at fork onto I 24
81 mi·1 hr 27 min·I 24
Exit 50AToward I 40 East, I 24 East: Knoxville, ChattanoogaUse the slight left lane.
15
Continue on I 40
93 mi·1 hr 42 min·I 40
Use the straight / right lanes.
16
Keep slight left at fork onto I 40
37 mi·40 min·I 40
Use the straight / slight right lanes.
17
Keep slight left at fork onto I 81
57 mi·1 hr·I 81
Exit 421Toward I 81 North: Bristol
18
Take the exit
0.4 mi·40 sec
Exit 57AToward I 26 East, US 23 South: Johnson City, Asheville
19
Merge onto I 26; US 23
14 mi·16 min·James H. Quillen Parkway
20
Take the exit
0.1 mi·15 sec
Exit 23Toward TN 91
21
Turn right onto SR 91
0.3 mi·38 sec·East Market Street
22
Turn left onto Buffalo Street
0.2 mi·32 sec·Buffalo Street
Use the left / straight lanes.
23
Turn right
433 ft·31 sec
24
Arrive at destination
Trip Plan
To make the most of this 8-hour, 13-minute drive, plan for an overnight stop to break up the 450.1 miles. Leaving early in the morning will help you avoid potential traffic congestion, especially as you navigate through populated areas. With two recommended stops, you'll have opportunities to stretch your legs and refuel. Keep an eye on your fuel gauge, as the longest stretch without a clear exit point is 161.1 miles on I-69. Budgeting around $70 for fuel is a good estimate for this trip. Enjoy the efficiency of covering ground on the interstates.
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 225 miles from South Fulton, TN, or about 4h 4m into the drive.
The longest continuous stretch on this route runs about 161.1 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 99 miles or 1h 47m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 225 miles or 4h 4m 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 225 miles or 4h 4m
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 5m
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 South Fulton, 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 South Fulton, TN
Aim for roughly 225 miles and 4.1 hours of wheel time on this day.
Day 2
Finish the approach into Johnson City, TN
Aim for roughly 225 miles and 4.1 hours of wheel time on this day.
Your first comfortable stop window is around 99 miles from South Fulton, 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 69 for about 161.1 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 17
5 decision points cluster between mile 49.6 and 378.4 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
49.6 mi into trip|~54m in|I 69
Keep slight left at fork onto I 69 toward I 24 East, I 69 North: Nashville, Henderson
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward I 24 East, I 69 North: Nashville, Hender...
9
162.8 mi into trip|~2h 56m in|I 24
Keep slight right at fork onto I 24 toward I 24 East, I 65 South: Nashville
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight left lanes.
Exit 44A
Toward I 24 East, I 65 South: Nashville
9
167.9 mi into trip|~3h 2m in|I 24
Keep slight left at fork onto I 24 toward I 40 East, I 24 East: Knoxville, Chattanooga
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left lane.
Exit 50A
Toward I 40 East, I 24 East: Knoxville, Chattan...
6
341.6 mi into trip|~6h 12m 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
378.4 mi into trip|~6h 53m 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
Fuel & Cost
Regular Gas
$66.47 one way
$132.94 round trip
$3.75/gal25.4 MPG avg158 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.14
$73.38
$146.76
premium
$4.72
$83.57
$167.14
diesel
$4.80
$84.99
$169.97
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$66
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$196–$306
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 157.5 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $47 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
135
1
$47.26
$21.60
Efficient EV
112.5
1
$39.38
$18.00
EV Truck/SUV
180
2
$63.01
$28.81
Gas CO2
157 kg
EV CO2
53 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 Jul 17, 2026
Origin
South Fulton, TN
Evening
in South Fulton on Saturday
Local time
8:26 PM
CDT
Current temp
71°F
Chance Showers And Thunderstorms then Patchy Fog
SW 0 to 5 mph52% chanceLive forecast
Destination
Johnson City, TN
Night
in Johnson City on Saturday
Local time
9:26 PM
EDT
Current temp
71°F
Mostly Clear
W 0 to 5 mph4% chanceLive forecast
85°F
Lafayette, TN
225 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 later
The destination clock does not match departure time, so double-check hotel check-in windows and late arrival plans.
Temperature spread
Very similar conditions
Both ends of the route are sitting at about the same temperature right now.
Road read
8h 13m 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...
21 mi from route
~52 min detour
Free
near mile 186.2
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
~70 min detour
Free
near mile 93.1
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
~73 min detour
Free
near mile 372.5
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
Prepare for a predominantly highway-focused experience, with 99% of this 450.1-mile journey taking place on major interstates like I-69, I-40, and I-24. You'll encounter one significant stretch of 161.1 miles on I-69, which is the longest uninterrupted section of the drive. This means you'll be in a consistent driving environment for extended periods, characterized by higher speeds and the typical flow of interstate traffic. The route is engineered for straightforward travel rather than scenic detours, prioritizing directness and ease of navigation.
99% highway — fuel and pacing are the main things to plan.
24 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 161.1 mi on I 69.
How Hard Is This Drive?
8/10
This is a straightforward highway drive that stays mostly on I 69 and I 40. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 49.6 miles in near I 69.
Driving Effort8/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 17 significant decision points across 450.1 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 49.6 miles (I 69): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 162.8 miles (I 24): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 167.9 miles (I 24): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Elevation Profile
Gently rolling terrain
1,817 ft357 ft
Total Climb
2,268 ft
Total Descent
998 ft
Highest Point
1,817 ft
~257.2 mi in
Elevation Range
1,460 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between South Fulton, TN and Johnson City, TN, road signs point toward Henderson, Knoxville and Chattanooga.
The longest stretch is about 161.1 miles on I 69. 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 225 miles on day one.
Yes — we found about 44 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 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 2 meaningful breaks. There are 44 rest areas along the route for bathroom stops.
The main spots that need attention: at 49.6 miles (I 69): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 162.8 miles (I 24): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 167.9 miles (I 24): 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 8.2 hours each way, a round trip means 16.4 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.
