Johnson City, TN to Somerville, TN is 459.1 miles and takes about 8h 29m via I 40 and I 81, with a fuel budget near $73 and enough daylight to finish in a day, though it's better suited for an overnight trip. This route stays within Tennessee, traversing the Southeast region. It's a predominantly highway drive, so expect consistent speeds and relatively straightforward navigation. Consider this trip if you're looking for a direct path across the state with minimal fuss, focusing on getting from point A to point B efficiently.
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
229.6 miles from Johnson City, TN
A natural place for your longest stop of the day
, about 4h 13m into the drive
.
Main Roads
Road
Distance
Duration
I 40
366.1 mi
6h 38m
I 81
57.1 mi
1h 1m
James H. Quillen Parkway
13.7 mi
16m
TN 76
12.5 mi
17m
SR 76
4.9 mi
7m
Downtown Loop
2.9 mi
3m
East Watauga Avenue
0.3 mi
<1m
North Roan Street
0.3 mi
<1m
Longest stretch:
I 40
— 366.1 mi, about 6h 38m
Turn-by-Turn Driving Directions
Step-by-step road directions between Johnson City, TN and Somerville, 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 left at fork onto I 40
0.4 mi·42 sec·I 40
Toward I 40 West: Huntsville, MemphisUse the slight left lane.
15
Merge onto I 40
0.6 mi·52 sec·Downtown Loop
Use the straight / slight right lanes.
16
Continue on I 40
2.3 mi·3 min·Downtown Loop
Exit 210AToward I 40 West, I 65 North: Memphis, LouisvilleUse the straight / slight right lanes.
17
Keep slight left at fork onto I 40
156 mi·2 hr 48 min·I 40
Toward I 40 West: MemphisUse the slight left / slight right lanes.
18
Take the exit
0.1 mi·22 sec
Exit 52Toward SR 179, SR 76: Whiteville
19
Turn right onto Stanton Koko Road
0.3 mi·30 sec·Stanton Koko Road
20
At end of road, turn right onto TN 76
0.2 mi·19 sec·TN 76
21
Continue on SR 76; SR 179
4.9 mi·7 min·SR 76; SR 179
22
Continue on TN 76
10.0 mi·14 min·TN 76
23
At end of road, turn left onto TN 59
0.1 mi·10 sec·TN 59
24
Continue on TN 76
2.3 mi·3 min·TN 76
25
Turn right onto US 64
42 ft·0 sec·US 64
26
Arrive at destination
US 64
Trip Plan
Given the 8.5-hour drive time, splitting this trip into two days is highly recommended for a more relaxed experience. Aim to depart early in the morning on your first day to cover a significant portion, perhaps around 200-250 miles. Plan your second day to complete the remaining miles to Somerville. The fuel cost is estimated at $73, so factor that into your budget. With two recommended stops, ensure you take breaks to stretch and refuel, especially before embarking on the longest stretch of 366.1 miles on I 40.
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 229.6 miles from Johnson City, TN, or about 4h 13m into the drive.
The longest continuous stretch on this route runs about 366.1 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 101 miles or 1h 53m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 229.6 miles or 4h 13m 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 229.6 miles or 4h 13m
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 18m
Traffic, exits, and arrival timing usually matter more near Somerville, 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 230 miles and 4.2 hours of wheel time on this day.
Day 2
Finish the approach into Somerville, TN
Aim for roughly 230 miles and 4.2 hours of wheel time on this day.
Your first comfortable stop window is around 101 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 366.1 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 20
5 decision points cluster between mile 0.4 and 285.4 — 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
8
282 mi into trip|~5h 10m in|I 40
Keep slight left at fork onto I 40 toward I 40 West: Huntsville, Memphis
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left lane.
Toward I 40 West: Huntsville, Memphis
7
285.4 mi into trip|~5h 15m in|I 40
Keep slight left at fork onto I 40 toward I 40 West: Memphis
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / slight right lanes.
Toward I 40 West: Memphis
Fuel & Cost
Regular Gas
$69.68 one way
$139.36 round trip
$3.86/gal25.4 MPG avg161 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.31
$77.85
$155.70
premium
$4.73
$85.44
$170.88
diesel
$5.99
$108.30
$216.61
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$70
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$200–$310
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 160.6 kg one way.
Driving Electric?
About $48 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
137.7
1
$48.21
$22.04
Efficient EV
114.8
1
$40.17
$18.36
EV Truck/SUV
183.6
2
$64.27
$29.38
Gas CO2
161 kg
EV CO2
54 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 Oct 18, 2026
Origin
Johnson City, TN
Morning
in Johnson City on Sunday
Local time
11:04 AM
EDT
Current temp
33°F
Mostly Clear then Areas Of Frost
NE 0 to 10 mph5% chanceLive forecast
Destination
Somerville, TN
Morning
in Somerville on Sunday
Local time
10:04 AM
CDT
Current temp
51°F
Unavailable
Live forecast
75°F
Livingston, TN
230 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
18 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 29m 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
~53 min detour
Free
near mile 269.1
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
~72 min detour
Free
near mile 79.2
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
You'll be on highways for 99% of this 459.1-mile trip. The longest continuous stretch on I 40 spans 366.1 miles. Expect to encounter numerous exits and potentially dense traffic as you pass through various towns and cities along the way. The route transitions to surface roads only for a very brief period near the end of your drive.
99% highway — fuel and pacing are the main things to plan.
26 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 366.1 mi on I 40.
How Hard Is This Drive?
9/10
This is a straightforward highway drive that stays mostly on I 40 and I 81. 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 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 20 significant decision points across 459.1 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 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
1,770 ft394 ft
Total Climb
1,236 ft
Total Descent
2,470 ft
Highest Point
1,770 ft
~196.8 mi in
Elevation Range
1,376 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 Somerville, TN, road signs point toward Nashville, Memphis and Louisville.
The longest stretch is about 366.1 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 230 miles on day one.
Yes — we found about 51 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 Somerville, 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 51 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 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 Somerville, TN before the return drive.
