How far is Chattanooga, TN from Harriman, TN?
The driving distance from Chattanooga, TN to Harriman, TN is about 78.9 miles (127 km), with a travel time of about 01h 37m by car.
- The straight-line flight distance is about 74.7 miles (120.2 km).
- For a round trip, plan for roughly 03h 14m 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 37m.
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.
City and county seat in Rhea County, Tennessee, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Chattanooga and Harriman.
Turn-by-Turn Driving Directions
Step-by-step road directions between Chattanooga and Harriman.
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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
42.3 mi · 53 min
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5
Merge slight left onto Spring City Highway
4.1 mi · 5 min · Spring City Highway
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6
Continue on South Gateway Avenue
2.7 mi · 3 min · South Gateway Avenue
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7
Continue on Roane State Highway
8.2 mi · 10 min · Roane State Highway
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8
Arrive at your destination
0 m · 1 sec · North Roane Street
Car Route Details
A richer read on the saved driving route between Chattanooga and Harriman.
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
Keep slight right
42.3 mi · 00h 53m
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 Chattanooga and Sunny near Harriman.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Chattanooga to Harriman?
The road trip is about 78.9 miles (127 km) and usually takes 01h 37m 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?
Dayton is a useful midpoint, sitting about 39.5 miles from Chattanooga and 39.5 miles from Harriman.
How much longer is the road route than the straight-line distance?
The direct path is about 74.7 miles (120.2 km), while the road route adds roughly 4.2 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 3:16 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $10.52 one way or $21.04 round trip. Estimated CO2 is about 24.8 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Chattanooga and Sunny near Harriman.
Flight Path Map
This map shows the direct air route between Chattanooga and Harriman. Straight-line distance: 74.71 mi (120.24 km).
#1 Chattanooga
The fourth most populous city in Tennessee.
| Population | 184,742 |
| Coordinates | 35.0456300, -85.3096800 |
| Altitude | 206 |
| Country | United States |
#2 Harriman
City in Tennessee
| Population | 6,182 |
| Coordinates | 35.9339600, -84.5524400 |
| Altitude | 244 |
| Country | United States |
End: Harriman (-84.55244, 35.93396)
Estimated Travel Time
Distance: 127 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 37m |
| 40 mph (64.37 km/h) | 01h 58m |
| 50 mph (80.47 km/h) | 01h 34m |
| 60 mph (96.56 km/h) | 01h 18m |
| 70 mph (112.65 km/h) | 01h 07m |
| 80 mph (129 km/h) | 00h 59m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $10.52 | $21.04 |
| Mid-grade | $4.25 | $11.87 | $23.73 |
| Premium | $4.65 | $12.98 | $25.97 |
| Diesel | $5.30 | $14.80 | $29.60 |
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 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.