This 253.2-mile drive from McKenzie to Chattanooga, Tennessee, is a straightforward, highway-focused journey that can comfortably be completed in a single day, taking approximately 4 hours and 47 minutes. You'll primarily be on I-24 and I-40, with a short segment on Tennessee National Guard Parkway, making it a 97% highway experience. With an estimated fuel cost of $40, this route is an economical option for a quick trip within the Southeast region. It’s a practical option if you're looking to get from point A to point B efficiently, with the longest stretch of uninterrupted driving being 103.1 miles on I-24.
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
126.6 miles from McKenzie, TN
A natural place for your longest stop of the day
, about 2h 25m into the drive
.
Main Roads
Road
Distance
Duration
I 24
103.1 mi
1h 54m
I 40
68 mi
1h 12m
Tennessee National Guard Parkway
52.2 mi
55m
TN 22
18.5 mi
24m
SR 22 Bypass
2.1 mi
3m
Lexington Street
1.9 mi
3m
Veterans Drive North
1.5 mi
2m
Old McKenzie Road
1.2 mi
2m
Longest stretch:
I 24
— 103.1 mi, about 1h 54m
Traffic on I-24
Hour-of-day weekday pattern from 9 FHWA count stations on your route.
Peak
3 PM
~1,974 veh/hr typical
· worst 2,367
Quietest
2 AM
~348 veh/hr
Peak-to-quiet ratio
5.7×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 52 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 McKenzie, TN and Chattanooga, TN.
1
Start on this road
77 ft·10 sec·this road
2
Turn left onto SR 124
1.2 mi·2 min·Cedar Street
3
Continue on SR 124
1.2 mi·2 min·Old McKenzie Road
4
Turn right onto TN 22
6.6 mi·7 min·TN 22
5
Continue on SR 22 Business
390 ft·9 sec·SR 22 Business
6
Turn right onto US 70A
1.5 mi·2 min·Veterans Drive North
7
Turn left onto SR 22 Bypass
2.1 mi·3 min·SR 22 Bypass
8
Turn right onto Lexington Street
1.9 mi·3 min·Lexington Street
9
Turn right onto TN 22
6.5 mi·8 min·TN 22
10
Continue on SR 22; SR 424
0.2 mi·21 sec·Lexington Clarksburg Road
11
Continue on TN 22
5.4 mi·7 min·TN 22
12
Take the exit
0.2 mi·25 sec
Toward Primary SR 22: Parkers Crossroad, Lexington, Huntingdon
13
Merge onto I 40
68 mi·1 hr 12 min·I 40
14
Take the exit
0.7 mi·1 min
Toward I 840 East: Knoxville, Franklin
15
Merge onto I 840
52 mi·55 min·Tennessee National Guard Parkway
Use the straight / slight right lanes.
16
Take the exit
0.8 mi·2 min
Exit 53AToward I 24 East: ChattanoogaUse the straight / slight right lanes.
17
Merge onto I 24
103 mi·1 hr 54 min·I 24
Use the straight / slight right lanes.
18
Take the exit
0.4 mi·46 sec
Exit 184BToward US 27 North: Downtown Chattanooga
19
Continue on US 27
0.7 mi·59 sec·US 27
20
Take the exit
0.2 mi·25 sec
Exit 1BToward Downtown
21
Turn right onto West Martin Luther King Boulevard
0.2 mi·29 sec·West Martin Luther King Boulevard
Use the left / straight / right lanes.
22
Arrive at destination
TN 8
Trip Plan
For this 4-hour and 47-minute drive, starting early is recommended to maximize daylight and avoid potential afternoon traffic, especially as you approach Chattanooga. With only one recommended stop, plan your breaks strategically. Since 103.1 miles of this journey are on I-24 without interruption, ensure you have adequate fuel before embarking on that segment. The $40 fuel cost suggests a moderate expense, so check your tank level before departing McKenzie. This efficient, highway-centric route allows for flexibility, but keeping an eye on your fuel gauge is key for a smooth trip.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 126.6 miles from McKenzie, TN, or about 2h 25m into the drive.
The longest continuous stretch on this route runs about 103.1 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 56 miles or 1h 9m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 126.6 miles or 2h 25m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 3h 56m
Traffic, exits, and arrival timing usually matter more near Chattanooga, TN than in the middle of the route.
Before You Leave
+
Open the route before leaving McKenzie, 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 McKenzie, TN
This is one driving day of about 253.2 miles and 4h 47m.
Your first comfortable stop window is around 56 miles from McKenzie, 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 24 for about 103.1 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 13
5 decision points cluster between mile 26.7 and 253.1 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
26.7 mi into trip|~37m in
Take the exit toward Primary SR 22: Parkers Crossroad, Lexington, Huntingdon
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward Primary SR 22: Parkers Crossroad, Lexing...
5
94.9 mi into trip|~1h 51m in
Take the exit toward I 840 East: Knoxville, Franklin
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward I 840 East: Knoxville, Franklin
5
95.6 mi into trip|~1h 52m in|I 840 / Tennessee National Guard Parkway
Merge onto I 840 / Tennessee National Guard Parkway
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
7
147.8 mi into trip|~2h 48m in
Take the exit toward I 24 East: Chattanooga
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 53A
Toward I 24 East: Chattanooga
6
253.1 mi into trip|~4h 47m in|West Martin Luther King Boulevard
Turn right onto West Martin Luther King Boulevard
Lane positioning matters here
Use the left / straight / right lanes.
Fuel & Cost
Regular Gas
$37.39 one way
$74.78 round trip
$3.75/gal25.4 MPG avg89 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.14
$41.28
$82.56
premium
$4.72
$47.01
$94.02
diesel
$4.80
$47.81
$95.62
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$37
Meals
$25–$50
Total
$62–$87
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 88.6 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $27 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
76
0
$26.59
$12.15
Efficient EV
63.3
0
$22.16
$10.13
EV Truck/SUV
101.3
1
$35.45
$16.20
Gas CO2
89 kg
EV CO2
30 kg (66% less)
Plan for 0 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
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 18, 2026
Origin
McKenzie, TN
Late night
in McKenzie on Sunday
Local time
5:18 AM
CDT
Current temp
72°F
Mostly Clear
0 mph2% chanceLive forecast
Destination
Chattanooga, TN
Morning
in Chattanooga on Sunday
Local time
6:18 AM
EDT
Current temp
91°F
Chance Showers And Thunderstorms
NW 0 to 5 mph42% 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
19 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
4h 47m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
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...
2 mi from route
~6 min detour
Free
near mile 148.4
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
Expect a predominantly highway-focused drive for 97% of this trip, designed for efficient travel. The main arteries, I-24 and I-40, will carry you for the majority of the 253.2 miles. You'll encounter a significant uninterrupted stretch of 103.1 miles on I-24, so be prepared for sustained highway speeds. While the route prioritizes speed, the transition onto Tennessee National Guard Parkway offers a brief change in scenery before you rejoin the interstates. This drive's personality is one of steady progress across the Tennessee landscape.
97% highway — fuel and pacing are the main things to plan.
22 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 103.1 mi on I 24.
How Hard Is This Drive?
5/10
This is a straightforward highway drive that stays mostly on I 24 and I 40. You will hit about 13 points where you need to pay attention to lane position or signs. The trickiest moment comes around 26.7 miles in.
Driving Effort5/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 253.2 miles you will encounter 13 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: at 26.7 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 94.9 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 95.6 miles (I 840 / Tennessee National Guard Parkway): Merge point - match speed before joining. Lane positioning matters here.
Elevation Profile
Gently rolling terrain
1,105 ft383 ft
Total Climb
1,064 ft
Total Descent
880 ft
Highest Point
1,105 ft
~180.9 mi in
Elevation Range
722 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between McKenzie, TN and Chattanooga, TN, road signs point toward Primary Sr 22: Parkers Crossroad, Lexington, Huntingdon and Franklin.
Chattanooga is the 4th largest city in Tennessee. It is the seat of Hamilton County. It is in Southeast Tennessee on the Tennessee River and near the border of Georgia. It was immortalized in the popular 1941 song "Chattanooga Choo Choo", made famous by Glenn Miller.
Top landmarks
•Delta Queen — paddle steamer launched in 1926
•Hunter Museum of American Art — art museum in Chattanooga, Tennessee
•Saints Peter and Paul Basilica — historic church in Tennessee, United States
Doable as a same-day drive at 4h 47m. Total distance: 253.2 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 47m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (97%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 103.1 miles on I 24. The full list of main roads is in the Roads section above.
Yes — we found about 26 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.
Yes, with realistic expectations. Build in a stop roughly every 2 hours, have snacks and activities ready, and check the Nearby Places tabs for kid-friendly stops along the way.
The main spots that need attention: at 26.7 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 94.9 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 95.6 miles (I 840 / Tennessee National Guard Parkway): Merge point - match speed before joining. Lane positioning matters here.
Yes — Stones River National Battlefield. See the National Parks section for detour distances and tips on detours.
Possible but tiring. At 4.8 hours each way, an in-and-out day trip would put you behind the wheel for 9.6 hours — manageable with a long break at Chattanooga, TN, but most travelers stay overnight.
