How far is Brentwood, TN from Johnson, TN?
The driving distance from Brentwood, TN to Johnson, TN is about 41.1 miles (66.2 km), with a travel time of about 00h 47m by car.
- The straight-line flight distance is about 32.7 miles (52.6 km).
- For a round trip, plan for roughly 01h 34m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM EDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 00h 47m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Human settlement in Loudon County, Tennessee, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Brentwood and Johnson.
Turn-by-Turn Driving Directions
Step-by-step road directions between Brentwood and Johnson.
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1
Start on Andes Road
1439 ft · 40 sec · Andes Road
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2
Continue on Chert Pit Road
1.3 km · 2 min · Chert Pit Road
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3
Turn right onto Middlebrook Pike
2804 ft · 1 min · Middlebrook Pike
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4
Turn left onto North Cedar Bluff Road
1.6 mi · 3 min · North Cedar Bluff Road
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5
Take the ramp slight right toward I 40, I 75
60 m · 5 sec
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6
Turn slight right onto I 40 West, I 75 South: Nashville, Chattanooga
1309 ft · 32 sec
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7
Merge slight left
9.4 mi · 11 min
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8
Keep slight left to continue on I 75 South: Chattanooga
21.9 mi · 23 min
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9
Take the exit slight right toward SR 322: Sweetwater
1836 ft · 32 sec
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10
Turn right onto Oakland Road
4.8 mi · 9 min · Oakland Road
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11
Turn left onto Raby Town Road
1.2 km · 3 min · Raby Town Road
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12
Keep slight left to continue on Raby Town Road
2311 ft · 2 min · Raby Town Road
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13
Continue on Raby Town Road
1421 ft · 1 min · Raby Town Road
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14
Arrive at your destination
0 m · 1 sec · Raby Town Road
Car Route Details
A richer read on the saved driving route between Brentwood and Johnson.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 75 South
Keep slight left to continue on I 75 South: Chattanooga
21.9 mi · 00h 24m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Sunny leaving Brentwood and Mostly Sunny near Johnson.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Brentwood to Johnson?
The road trip is about 41.1 miles (66.2 km) and usually takes 00h 47m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Loudon is a useful midpoint, sitting about 20.7 miles from Brentwood and 20.5 miles from Johnson.
How much longer is the road route than the straight-line distance?
The direct path is about 32.7 miles (52.6 km), while the road route adds roughly 8.4 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 4:56 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $5.47 one way or $10.94 round trip. Estimated CO2 is about 12.9 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Brentwood and Mostly Sunny near Johnson.
Flight Path Map
This map shows the direct air route between Brentwood and Johnson. Straight-line distance: 32.71 mi (52.64 km).
#1 Brentwood
A city in Williamson County, Tennessee.
| Population | 42,876 |
| Coordinates | 35.9561900, -84.0951900 |
| Altitude | 327 |
| Country | United States |
#2 Johnson
Johnson is a place in Tennessee, United States.
| Population | 0 |
| Coordinates | 35.6723000, -84.5624300 |
| Altitude | 273 |
| Country | United States |
End: Raby Town Road (-84.56222, 35.672434)
Estimated Travel Time
Distance: 66 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 22m |
| 40 mph (64.37 km/h) | 01h 01m |
| 50 mph (80.47 km/h) | 00h 49m |
| 60 mph (96.56 km/h) | 00h 41m |
| 70 mph (112.65 km/h) | 00h 35m |
| 80 mph (129 km/h) | 00h 30m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $5.47 | $10.94 |
| Mid-grade | $4.25 | $6.17 | $12.33 |
| Premium | $4.65 | $6.75 | $13.50 |
| Diesel | $5.30 | $7.69 | $15.38 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Tennessee · Apr 30, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.