Chattanooga, TN to Oak Hill, TN is 231.1 miles and takes about 4h 33m via I 75, I 81, and I 40, with a fuel budget near $36 and enough daylight to finish in a day. This drive stays within the Southeast region, primarily in Tennessee. It's a straightforward trip that keeps you on major interstates for most of the way. You'll find it’s a practical option if you need to get from point A to point B efficiently, with minimal fuss.
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
115.5 miles from Chattanooga, TN
A natural place for your longest stop of the day
, about 2h 11m into the drive
.
Main Roads
Road
Distance
Duration
I 75
99.2 mi
1h 49m
I 81
56.6 mi
1h
I 40
36.7 mi
40m
James H. Quillen Parkway
15.1 mi
18m
I 24
5.8 mi
7m
Laurels Road
3.9 mi
6m
Dry Creek Road
2.6 mi
4m
Gap Creek Road
2.2 mi
3m
Longest stretch:
I 75
— 99.2 mi, about 1h 49m
Turn-by-Turn Driving Directions
Step-by-step road directions between Chattanooga, TN and Oak Hill, TN.
1
Start on TN 8
80 ft·6 sec·West Martin Luther King Boulevard
2
Turn right onto Market Street
1.2 mi·3 min·Market Street
3
Turn left
0.3 mi·22 sec
4
Merge onto I 24; US 27
5.8 mi·7 min·I 24; US 27
5
Keep slight left at fork
0.9 mi·1 min
Exit 185 BToward I 75 North: KnoxvilleUse the slight left / slight right lanes.
6
Merge onto I 75
99 mi·1 hr 49 min·I 75
Use the straight lane.
7
Keep slight left at fork onto I 40
37 mi·40 min·I 40
Use the straight / slight right lanes.
8
Keep slight left at fork onto I 81
57 mi·1 hr·I 81
Exit 421Toward I 81 North: Bristol
9
Take the exit
0.4 mi·40 sec
Exit 57AToward I 26 East, US 23 South: Johnson City, Asheville
10
Merge onto I 26; US 23
15 mi·18 min·James H. Quillen Parkway
11
Take the exit
0.1 mi·16 sec
Exit 24Use the slight right lane.
12
Turn slight right
342 ft·8 sec
13
Merge onto US 321; SR 67
0.2 mi·23 sec·University Parkway
14
Take the exit
0.2 mi·29 sec
Toward Milligan Highway
15
Turn right onto Milligan Highway
2.2 mi·3 min·Milligan Highway
16
Turn right onto SR 359
0.8 mi·1 min·Okolona Road
17
Turn left onto SR 361
3.9 mi·6 min·Laurels Road
18
Continue on SR 361
2.6 mi·4 min·Dry Creek Road
19
At end of road, turn right onto SR 361
2.2 mi·3 min·Gap Creek Road
20
Turn right onto Rittertown Road
1.1 mi·2 min·Rittertown Road
21
Turn right onto Browns Branch Road
1.6 mi·6 min·Browns Branch Road
22
Arrive at destination
Browns Branch Road
Trip Plan
Given the 4h 33m estimated drive time, leaving Chattanooga in the morning allows ample time to reach Oak Hill before evening. With a fuel cost around $36, factor this into your budget. The route is mostly highway, so plan for a single stop for fuel or a break around the halfway point, perhaps near the 99.2-mile mark on I 75. Since this trip is easily completed in a day, you have flexibility with your departure time.
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 115.5 miles from Chattanooga, TN, or about 2h 11m into the drive.
The longest continuous stretch on this route runs about 99.2 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 51 miles or 1h in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 115.5 miles or 2h 11m 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 32m
Traffic, exits, and arrival timing usually matter more near Oak Hill, TN than in the middle of the route.
Before You Leave
+
Open the route before leaving Chattanooga, 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 Chattanooga, TN
This is one driving day of about 231.1 miles and 4h 33m.
Your first comfortable stop window is around 51 miles from Chattanooga, 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 75 for about 99.2 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 18
5 decision points cluster between mile 7.3 and 216.2 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
7.3 mi into trip|~11m in
Keep slight left at fork toward I 75 North: Knoxville
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / slight right lanes.
Exit 185 B
Toward I 75 North: Knoxville
6
107.4 mi into trip|~2h 2m 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
144.1 mi into trip|~2h 43m 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
6
200.7 mi into trip|~3h 44m in
Take the exit toward I 26 East, US 23 South: Johnson City, Asheville
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Exit 57A
Toward I 26 East, US 23 South: Johnson City, As...
6
216.2 mi into trip|~4h 3m in
Take the exit
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 24
Fuel & Cost
Regular Gas
$34.13 one way
$68.26 round trip
$3.75/gal25.4 MPG avg81 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.14
$37.68
$75.35
premium
$4.72
$42.91
$85.82
diesel
$4.80
$43.64
$87.27
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$34
Meals
$25–$50
Total
$59–$84
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 80.9 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $24 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
69.3
0
$24.27
$11.09
Efficient EV
57.8
0
$20.22
$9.24
EV Truck/SUV
92.4
1
$32.35
$14.79
Gas CO2
81 kg
EV CO2
27 kg (67% 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
Chattanooga, TN
Morning
in Chattanooga on Sunday
Local time
6:39 AM
EDT
Current temp
91°F
Chance Showers And Thunderstorms
NW 5 mph42% chanceLive forecast
Heat Advisory
Heat Advisory issued July 18 at 12:07PM CDT until July 19 at 9:00PM CDT by NWS Memphis TN
Destination
Oak Hill, TN
Morning
in Oak Hill on Sunday
Local time
6:39 AM
EDT
Current temp
83°F
Showers And Thunderstorms Likely
W 5 mph64% chanceLive forecast
Heat Advisory
Heat Advisory issued July 18 at 12:07PM CDT until July 19 at 9:00PM CDT by NWS Memphis TN
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
8 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
4h 33m 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.
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...
28 mi from route
~70 min detour
Free
near mile 127.5
Park Closure: Heintooga Ridge Road is currently closed
Park Closure: Ramsey Cascades Trail temporarily closed
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
Expect to be on highways for 92% of this 231.1-mile route. The longest continuous stretch on a highway is 99.2 miles, which you'll encounter on I 75. After this, you'll transition to surface roads as you approach your destination. You'll notice frequent exits and merges as you navigate this predominantly interstate corridor.
92% 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: 99.2 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 81. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 7.3 miles in.
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 18 significant decision points across 231.1 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 7.3 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 107.4 miles (I 40): Highway fork - watch signs carefully. Lane positioning matters here; at 144.1 miles (I 81): Highway fork - watch signs carefully.
Elevation Profile
Gently rolling terrain
2,586 ft675 ft
Total Climb
2,319 ft
Total Descent
408 ft
Highest Point
2,586 ft
~231.1 mi in
Elevation Range
1,911 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Chattanooga, TN and Oak Hill, TN, road signs point toward Asheville and Milligan Highway.
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 33m. Total distance: 231.1 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 33m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (92%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 99.2 miles on I 75. The full list of main roads is in the Roads section above.
Yes — we found about 24 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 Oak Hill, 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 1 meaningful breaks. There are 24 rest areas along the route for bathroom stops.
The main spots that need attention: at 7.3 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 107.4 miles (I 40): Highway fork - watch signs carefully. Lane positioning matters here; at 144.1 miles (I 81): Highway fork - watch signs carefully.
Yes — Great Smoky Mountains National Park. See the National Parks section for detour distances and tips on detours.
Possible but tiring. At 4.6 hours each way, an in-and-out day trip would put you behind the wheel for 9.1 hours — manageable with a long break at Oak Hill, TN, but most travelers stay overnight.
