How far is Chattanooga, TN from Decatur, TN?
The driving distance from Chattanooga, TN to Decatur, TN is about 52.1 miles (83.8 km), with a travel time of about 01h 07m by car.
- The straight-line flight distance is about 43.7 miles (70.3 km).
- For a round trip, plan for roughly 02h 15m 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 01h 07m.
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.
Town in Rhea County, Tennessee, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms Likely
Showers And Thunderstorms Likely
Driving Route Map
The map below follows the saved road route between Chattanooga and Decatur.
Turn-by-Turn Driving Directions
Step-by-step road directions between Chattanooga and Decatur.
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1
Start on West Martin Luther King Boulevard
990 ft · 32 sec · West Martin Luther King Boulevard
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2
Take the ramp straight
1.2 km · 2 min
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3
Merge slight left
20.6 mi · 24 min
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4
Keep slight right
16.2 mi · 19 min
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5
Take the exit right
39 m · 4 sec
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6
Continue on Washington Street
114 m · 8 sec · Washington Street
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7
Continue on Old Washington Highway
8 mi · 12 min · Old Washington Highway
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8
Continue on William Jennings Bryan Highway
5.7 mi · 8 min · William Jennings Bryan Highway
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9
Continue on Decatur Pike
2408 ft · 45 sec · Decatur Pike
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10
Turn left onto Highway 58
830 ft · 16 sec · Highway 58
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11
Arrive at your destination
0 m · 1 sec · Highway 58
Car Route Details
A richer read on the saved driving route between Chattanooga and Decatur.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
West Martin Luther King Boulevard
Merge slight left
20.6 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.
Showers And Thunderstorms Likely leaving Chattanooga and Showers And Thunderstorms Likely near Decatur.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Chattanooga to Decatur?
The road trip is about 52.1 miles (83.8 km) and usually takes 01h 07m 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?
Graysville is a useful midpoint, sitting about 26 miles from Chattanooga and 26 miles from Decatur.
How much longer is the road route than the straight-line distance?
The direct path is about 43.7 miles (70.3 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 4:14 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.94 one way or $13.88 round trip. Estimated CO2 is about 16.4 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms Likely around Chattanooga and Showers And Thunderstorms Likely near Decatur.
Flight Path Map
This map shows the direct air route between Chattanooga and Decatur. Straight-line distance: 43.69 mi (70.32 km).
#1 Chattanooga
The fourth most populous city in Tennessee.
| Population | 184,742 |
| Coordinates | 35.0456300, -85.3096800 |
| Altitude | 206 |
| Country | United States |
#2 Decatur
Human settlement in Meigs County, Tennessee, United States of America
| Population | 1,663 |
| Coordinates | 35.5147900, -84.7902200 |
| Altitude | 237 |
| Country | United States |
End: Decatur (-84.79022, 35.51479)
Estimated Travel Time
Distance: 84 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 44m |
| 40 mph (64.37 km/h) | 01h 18m |
| 50 mph (80.47 km/h) | 01h 02m |
| 60 mph (96.56 km/h) | 00h 52m |
| 70 mph (112.65 km/h) | 00h 44m |
| 80 mph (129 km/h) | 00h 38m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $6.94 | $13.88 |
| Mid-grade | $4.25 | $7.83 | $15.65 |
| Premium | $4.65 | $8.56 | $17.13 |
| Diesel | $5.30 | $9.76 | $19.52 |
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 · May 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.