Connecting Brentwood to Chattanooga is a straightforward 104.5-mile journey that typically takes about 2 hours and 1 minute. Because the trip is relatively short, it is perfectly suited for a single-day excursion, meaning you won't need to worry about overnight lodging. You can expect to spend roughly $16 on fuel for this one-way transit across the Southeast. Navigating primarily via I-24, I-40, and I-75, you will find this is a highly efficient route for those looking to move between these two Tennessee hubs. Given the manageable duration, this drive offers great flexibility for your schedule, whether you are heading out for a quick business meeting or a weekend getaway.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
52.3 miles from Brentwood, TN
A natural place for your longest stop of the day
, about 1h 1m into the drive
.
Main Roads
Road
Distance
Duration
I 75
83.1 mi
1h 31m
I 40
9.4 mi
10m
I 24
5.8 mi
7m
US 27
1.7 mi
2m
North Cedar Bluff Road
1.6 mi
3m
Chert Pit Road
0.8 mi
2m
Middlebrook Pike
0.5 mi
1m
Andes Road
0.3 mi
<1m
Longest stretch:
I 75
— 83.1 mi, about 1h 31m
Turn-by-Turn Driving Directions
Step-by-step road directions between Brentwood, TN and Chattanooga, TN.
1
Start on Andes Road
0.3 mi·40 sec·Andes Road
2
Continue on Chert Pit Road
0.8 mi·2 min·Chert Pit Road
3
Turn right onto SR 169
0.5 mi·1 min·Middlebrook Pike
Use the straight lane.
4
Turn left onto North Cedar Bluff Road
1.6 mi·3 min·North Cedar Bluff Road
Use the left lane.
5
Take the ramp
198 ft·4 sec
Toward I 40, I 75Use the slight right lane.
6
Turn slight right
0.2 mi·31 sec
Toward I 40 West, I 75 South: Nashville, Chattanooga
7
Merge onto I 40; I 75
9.4 mi·10 min·I 40; I 75
Use the straight / slight right lanes.
8
Keep slight left at fork onto I 75
83 mi·1 hr 31 min·I 75
Toward I 75 South: ChattanoogaUse the straight lane.
9
Take the exit
0.7 mi·56 sec
Toward I 24 West: Chattanooga, NashvilleUse the straight / slight right lanes.
10
Continue on I 24
5.8 mi·7 min·I 24
Toward Chattanooga, Nashville
11
Take the exit onto US 27
0.2 mi·15 sec·US 27
Exit 178Toward US 27 North: Downtown, Lookout MountainUse the straight / slight right lanes.
12
Keep slight left at fork onto US 27
0.2 mi·16 sec·US 27
Exit 178Toward US 27 North: Downtown, Lookout MountainUse the straight / slight right lanes.
13
Keep slight left at fork onto US 27
1.4 mi·1 min·US 27
Use the straight lane.
14
Take the exit
0.2 mi·25 sec
Exit 1BToward Downtown
15
Turn right onto West Martin Luther King Boulevard
0.2 mi·29 sec·West Martin Luther King Boulevard
Use the left / straight / right lanes.
16
Arrive at destination
TN 8
Trip Plan
Since this is a quick 2-hour trek, you have the advantage of being able to depart at your convenience without needing a complex itinerary. While the drive is short enough to handle in one go, try to time your departure to avoid peak traffic hours on the major interstates to ensure you stay within your estimated duration. Keep an eye on your fuel gauge before leaving Brentwood, as $16 should cover your needs, but having a little extra for local driving in Chattanooga is wise. Because there are no mandatory stops built into this route, feel free to stretch your legs whenever you feel necessary to keep your focus sharp. A smart tip for this specific path is to remain alert during the transitions between I-40 and I-75, as these highway interchanges are where you will encounter the most significant shifts in traffic density.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
You may only need one short stretch break if traffic stays light.
The halfway point lands around 52.3 miles from Brentwood, TN, or about 1h 1m into the drive.
The longest continuous stretch on this route runs about 83.1 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 23 miles or 29m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 52.3 miles or 1h 1m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 1h 38m
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 Brentwood, 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 Brentwood, TN
This is one driving day of about 104.5 miles and 2h 1m.
Your first comfortable stop window is around 23 miles from Brentwood, TN.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on I 75 for about 83.1 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 12
5 decision points cluster between mile 1.1 and 102.6 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
1.1 mi into trip|~2m in|SR 169 / Middlebrook Pike
Turn right onto SR 169 / Middlebrook Pike
Lane positioning matters here
Use the straight lane.
7
12.9 mi into trip|~18m in|I 75
Keep slight left at fork onto I 75 toward I 75 South: Chattanooga
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight lane.
Toward I 75 South: Chattanooga
7
96 mi into trip|~1h 49m in
Take the exit toward I 24 West: Chattanooga, Nashville
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward I 24 West: Chattanooga, Nashville
8
102.4 mi into trip|~1h 58m in|US 27
Take the exit onto US 27 toward US 27 North: Downtown, Lookout Mountain
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 178
Toward US 27 North: Downtown, Lookout Mountain
10
102.6 mi into trip|~1h 58m in|US 27
Keep slight left at fork onto US 27 toward US 27 North: Downtown, Lookout Mountain
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 178
Toward US 27 North: Downtown, Lookout Mountain
Fuel & Cost
Regular Gas
$16.34 one way
$32.67 round trip
$3.97/gal25.4 MPG avg37 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.36
$17.94
$35.88
premium
$4.89
$20.11
$40.22
diesel
$5.61
$23.07
$46.14
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$16
Meals
$25–$50
Total
$41–$66
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 36.6 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $11 in charging
· 0 stops
· 68% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
31.3
0
$10.97
$5.02
Efficient EV
26.1
0
$9.14
$4.18
EV Truck/SUV
41.8
0
$14.63
$6.69
Gas CO2
37 kg
EV CO2
12 kg (68% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
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 16, 2026
Origin
Brentwood, TN
Morning
in Brentwood on Sunday
Local time
8:10 AM
EDT
Current temp
84°F
Unavailable
Live forecast
Destination
Chattanooga, TN
Morning
in Chattanooga on Sunday
Local time
8:10 AM
EDT
Current temp
85°F
Sunny
SW 5 to 10 mph14% chanceLive forecast
81°F
Calhoun, TN
52 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.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
1 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
2h 1m on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
More Details
What kind of drive is this?
This trip is a quintessential highway-focused drive, with 96% of your time spent on major interstates. You will settle into a steady rhythm behind the wheel, especially during the longest uninterrupted stretch of 83.1 miles on I-75. Expect a fast-paced experience that prioritizes directness over local scenic detours or winding backroads. The transition between these major Tennessee thoroughfares is designed for speed and consistency, making it a reliable choice for commuters and travelers alike. You should be prepared for a standard interstate environment where traffic flow and steady cruising define the personality of the road.
96% highway — fuel and pacing are the main things to plan.
16 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 83.1 mi on I 75.
How Hard Is This Drive?
9/10
This is a straightforward highway drive that stays mostly on I 75 and I 40. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 1.1 miles in near SR 169 / Middlebrook Pike.
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 12 significant decision points across 104.5 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 1.1 miles (SR 169 / Middlebrook Pike): Lane positioning matters here; at 12.9 miles (I 75): Highway fork - watch signs carefully. Lane positioning matters here; at 96 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Brentwood, TN to Chattanooga, TN, road signs begin pointing toward Nashville along the way.
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.
Doable as a same-day drive at 2h 1m. Total distance: 104.5 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
2h 1m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (96%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 83.1 miles on I 75. The full list of main roads is in the Roads section above.
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 Chattanooga, 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. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 1.1 miles (SR 169 / Middlebrook Pike): Lane positioning matters here; at 12.9 miles (I 75): Highway fork - watch signs carefully. Lane positioning matters here; at 96 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes. A round trip is manageable in a single day if you plan a break at Chattanooga, TN before heading back.
