Embarking on a journey from Memphis, TN, to Watertown, TN, covers 404.8 miles and is estimated to take about 7 hours and 36 minutes of driving. This trip is best tackled in a single day, offering a straightforward drive through the Southeast region. The primary route utilizes I-40 for the majority of the journey, making it a largely highway-focused experience. With a projected fuel cost of around $63, this drive is economically manageable. You'll make approximately two planned stops along the way, breaking up the substantial distance.
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
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
202.4 miles from Memphis, TN
A natural place for your longest stop of the day
, about 3h 41m into the drive
.
Loading map...
Drive Character
This route is predominantly a highway-focused drive, with a 99% highway share. You'll spend the vast majority of your time on I-40, experiencing a consistent pace for the longest stretch of 362.8 miles. While the bulk of the journey is on this main interstate, the latter part incorporates Lamar Alexander Parkway and East Lamar Alexander Parkway, offering a slight shift in road character as you approach your destination. Expect a steady, direct path with minimal deviations from major thoroughfares.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 17 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 40 is the longest continuous segment at about 362.8 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on I 40 and Lamar Alexander Parkway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.3 miles in.
Route Complexity8/10
Demanding - plan breaks and stay ahead of the key maneuvers
This is a demanding drive. With 15 significant decision points across 404.8 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 12.3 miles (I 40): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 210.2 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Critical Maneuvers
5 of 15 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
8
0.3 mi into trip|~0m in
Take the ramp toward I 40 East
Lane positioning matters here
Use the right lane.
Toward I 40 East
8
12.3 mi into trip|~15m in|I 40
Keep slight left at fork onto I 40 toward I 40 East: Nashville, Knoxville
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left / straight lanes.
Toward I 40 East: Nashville, Knoxville
9
210.2 mi into trip|~3h 50m in
Keep slight right at fork toward I 40 East, I 65 South: Knoxville, Huntsville
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left / slight right lanes.
Exit 208A
Toward I 40 East, I 65 South: Knoxville, Huntsv...
9
213.4 mi into trip|~3h 54m in|I 40
Keep slight right at fork onto I 40 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 / slight right lanes.
Exit 211A
Toward I 40 East, I 24 East: Knoxville, Chattan...
10
366.6 mi into trip|~6h 41m in
Keep slight right at fork toward US 321, TN 73, TN 95: Lenoir City, Oak Ridge
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the right lane.
Exit 364
Toward US 321, TN 73, TN 95: Lenoir City, Oak R...
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Memphis, TN and Watertown, TN, road signs point toward Huntsville, Louisville, Knoxville, Chattanooga and Oak Ridge.
Huntsville
210.2 mi in|~3h 50m
Louisville
212.9 mi in|~3h 53m|via I 40
Knoxville
212.9 mi in|~3h 53m|via I 40
Chattanooga
212.9 mi in|~3h 53m|via I 40
Oak Ridge
366.4 mi in|~6h 40m
Main Roads
Road
Distance
Duration
I 40
362.8 mi
6h 35m
Lamar Alexander Parkway
26.9 mi
36m
East Lamar Alexander Parkway
9 mi
13m
Downtown Loop
2.9 mi
4m
East Millers Cove Road
1.9 mi
4m
Old Walland Highway
0.3 mi
<1m
North B. B. King Boulevard
0.2 mi
<1m
Poplar Avenue
<0.1 mi
<1m
Longest stretch:
I 40
— 362.8 mi, about 6h 35m
Turn-by-Turn Driving Directions
Step-by-step road directions between Memphis, TN and Watertown, TN.
1
Start on Poplar Avenue
190 ft·11 sec·Poplar Avenue
2
Turn left onto North B. B. King Boulevard
0.2 mi·33 sec·North B. B. King Boulevard
Use the left lane.
3
Take the ramp
0.1 mi·13 sec
Toward I 40 EastUse the right lane.
4
Merge onto I 40
12 mi·14 min·I 40
Use the straight lane.
5
Keep slight left at fork onto I 40
198 mi·3 hr 34 min·I 40
Toward I 40 East: Nashville, KnoxvilleUse the slight left / straight lanes.
6
Keep slight right at fork
0.2 mi·24 sec
Exit 208AToward I 40 East, I 65 South: Knoxville, HuntsvilleUse the slight left / slight right lanes.
7
Merge onto I 40; I 65
2.4 mi·3 min·Downtown Loop
Use the straight / slight right lanes.
8
Continue on I 40
0.5 mi·42 sec·Downtown Loop
Exit 211B; 211AToward I 24 West, I 40 East, I 24 East: Clarksville, Louisville, Knoxville, ChattanoogaUse the straight / slight right lanes.
9
Keep slight right at fork onto I 40
153 mi·2 hr 46 min·I 40
Exit 211AToward I 40 East, I 24 East: Knoxville, ChattanoogaUse the slight left / slight right lanes.
10
Take the exit
0.3 mi·28 sec
Exit 364Toward US 321, TN 73, TN 95: Lenoir City, Oak RidgeUse the slight right lane.
11
Keep slight right at fork
150 ft·2 sec
Exit 364Toward US 321, TN 73, TN 95: Lenoir City, Oak RidgeUse the right lane.
12
Merge onto US 321
27 mi·36 min·Lamar Alexander Parkway
Use the left / straight lanes.
13
Keep slight right at fork onto US 321
9.0 mi·13 min·East Lamar Alexander Parkway
14
Turn left onto Old Walland Highway
0.3 mi·44 sec·Old Walland Highway
15
Turn left onto East Millers Cove Road
1.9 mi·4 min·East Millers Cove Road
16
Turn right
33 ft·2 sec
17
Arrive at destination
Trip Plan
Given the 7-hour 36-minute duration, starting your drive from Memphis early in the morning is recommended to maximize daylight and allow for a comfortable pace. You'll have about two planned stops to consider, so factor in time for rest and refueling. The longest uninterrupted stretch on I-40 is over 360 miles, so planning your fuel stops accordingly is crucial. Keep an eye on the posted speed limits, as they can vary, especially as you transition from I-40 to the parkways closer to Watertown.
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 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 202.4 miles from Memphis, TN, or about 3h 41m into the drive.
The longest continuous stretch on this route runs about 362.8 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 89 miles or 1h 38m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 202.4 miles or 3h 41m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 6h 17m
Traffic, exits, and arrival timing usually matter more near Watertown, TN than in the middle of the route.
Before You Leave
+
Open the route before leaving Memphis, 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.
Day 1
Settle into the route from Memphis, TN
This is one driving day of about 404.8 miles and 7h 36m.
Your first comfortable stop window is around 89 miles from Memphis, TN.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 2 real breaks rather than only quick fuel stops.
The longest stretch is on I 40 for about 362.8 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 202.4 mi from Memphis, TN
· 3h 41m into the drive
The midpoint is around 202.4 miles from Memphis, TN, which is a good place for a longer meal and fuel stop.
Arriving in Watertown, TN
The final approach into Watertown, 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 Watertown, TN.
After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
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...
18 mi from route
~46 min detour
Free
near mile 404.8
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
~54 min detour
Free
near mile 237.3
Park data from the National Park Service API. Alerts update every 2 hours.
Fuel & Cost
Regular Gas
$63.29 one way
$126.57 round trip
$3.97/gal25.4 MPG avg142 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.36
$69.49
$138.97
premium
$4.89
$77.90
$155.80
diesel
$5.61
$89.37
$178.75
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$63
Meals
$25–$50
Total
$88–$113
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 141.6 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $43 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
121.4
1
$42.50
$19.43
Efficient EV
101.2
1
$35.42
$16.19
EV Truck/SUV
161.9
2
$56.67
$25.91
Gas CO2
142 kg
EV CO2
47 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 data refreshed 5 days ago
Origin
Memphis, TN
Night
in Memphis on Tuesday
Local time
10:27 PM
CDT
Current temp
64°F
Unavailable
Live forecast
Destination
Watertown, TN
Night
in Watertown on Tuesday
Local time
11:27 PM
EDT
Current temp
77°F
Unavailable
Live 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
13 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
7h 36m 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.
Frequently Asked Questions
The drive from Memphis, TN to Watertown, TN covers 404.8 miles and takes about 7h 36m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 40, Lamar Alexander Parkway, East Lamar Alexander Parkway. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 202.4 miles from Memphis, TN. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $63.29 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Start early — leave by 6-7 AM to arrive at a reasonable hour. This is a long drive — plan for a morning departure or consider splitting it into two days.
Plan about 2 meaningful breaks for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
This is a demanding drive. With 15 significant decision points across 404.8 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.
The main spots that need attention: at 0.3 miles: Lane positioning matters here; at 12.3 miles (I 40): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 210.2 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Between Memphis, TN and Watertown, TN, road signs point toward Huntsville, Louisville, Knoxville, Chattanooga and Oak Ridge.
