How far is Johnson, TN from Loudon, TN?
The driving distance from Johnson, TN to Loudon, TN is about 20.5 miles (33 km), with a travel time of about 00h 33m by car.
- The straight-line flight distance is about 13.5 miles (21.7 km).
- For a round trip, plan for roughly 01h 06m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM EDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 33m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
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.
City in Loudon County, Tennessee, United States
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 Johnson and Loudon.
Turn-by-Turn Driving Directions
Step-by-step road directions between Johnson and Loudon.
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1
Start on Raby Town Road
1.5 mi · 6 min · Raby Town Road
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2
At the end of the road, turn right onto Oakland Road
5.1 mi · 9 min · Oakland Road
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3
Take the ramp left
1795 ft · 44 sec
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4
Merge slight left
8.6 mi · 9 min
-
5
Take the exit slight right toward Primary SR 72: Loudon
2358 ft · 47 sec
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6
Turn right onto State Route 72
3.9 mi · 6 min · State Route 72
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7
Turn left onto Grove Street
1 km · 2 min · Grove Street
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8
Turn left onto Blair Street
12 m · 2 sec · Blair Street
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9
Arrive at your destination
0 m · 1 sec · Blair Street
Car Route Details
A richer read on the saved driving route between Johnson and Loudon.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Oakland Road
Merge slight left
8.64 mi · 00h 09m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Partly Cloudy leaving Johnson and Mostly Sunny near Loudon.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Johnson to Loudon?
The road trip is about 20.5 miles (33 km) and usually takes 00h 33m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Philadelphia is a useful midpoint, sitting about 10.3 miles from Johnson and 10.3 miles from Loudon.
How much longer is the road route than the straight-line distance?
The direct path is about 13.5 miles (21.7 km), while the road route adds roughly 7 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 7:00 AM to 7:00 PM EDT. If you want a more comfortable same-day return, try to leave by 7:24 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $2.72 one way or $5.43 round trip. Estimated CO2 is about 6.4 kg one way.
What should you check before leaving?
Before you leave, expect Partly Cloudy around Johnson and Mostly Sunny near Loudon.
Flight Path Map
This map shows the direct air route between Johnson and Loudon. Straight-line distance: 13.49 mi (21.71 km).
#1 Johnson
Johnson is a place in Tennessee, United States.
| Population | 0 |
| Coordinates | 35.6723000, -84.5624300 |
| Altitude | 273 |
| Country | United States |
#2 Loudon
Human settlement in Loudon County, Tennessee, United States of America
| Population | 6,009 |
| Coordinates | 35.7328500, -84.3338100 |
| Altitude | 255 |
| Country | United States |
End: Loudon (-84.33381, 35.73285)
Estimated Travel Time
Distance: 33 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 40m |
| 40 mph (64.37 km/h) | 00h 30m |
| 50 mph (80.47 km/h) | 00h 24m |
| 60 mph (96.56 km/h) | 00h 20m |
| 70 mph (112.65 km/h) | 00h 17m |
| 80 mph (129 km/h) | 00h 15m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $2.72 | $5.43 |
| Mid-grade | $4.25 | $3.06 | $6.12 |
| Premium | $4.65 | $3.35 | $6.70 |
| Diesel | $5.30 | $3.82 | $7.64 |
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 15, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.