How far is Knoxville, TN from Portland, TN?
The driving distance from Knoxville, TN to Portland, TN is about 186.7 miles (300.5 km), with a travel time of about 03h 29m by car.
- The straight-line flight distance is about 150.8 miles (242.7 km).
- For a round trip, plan for roughly 06h 59m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM EDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
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 03h 29m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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 Tennessee, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Knoxville and Portland.
Turn-by-Turn Driving Directions
Step-by-step road directions between Knoxville and Portland.
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1
Start on Henley Street
1056 ft · 20 sec · Henley Street
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2
Continue on Henley Street
727 ft · 14 sec · Henley Street
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3
Turn slight left onto Western Avenue
1.1 km · 1 min · Western Avenue
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4
Turn left onto Ailor Avenue
2326 ft · 43 sec · Ailor Avenue
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5
Take the ramp straight toward I 40 West, I 75 South
1637 ft · 40 sec
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6
Merge slight left
18.3 mi · 21 min
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7
Keep slight right to continue on Nashville
136 mi · 2 hr 26 min
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8
Take the exit slight right toward TN 109: Gallatin
1834 ft · 48 sec
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9
Turn right
12.7 mi · 18 min
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10
Turn left
17.6 mi · 20 min
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11
Arrive at your destination
0 m · 1 sec · North Broadway
Car Route Details
A richer read on the saved driving route between Knoxville and Portland.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Nashville
Keep slight right to continue on Nashville
136 mi · 02h 26m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Showers And Thunderstorms leaving Knoxville and Showers And Thunderstorms Likely then Chance Showers And Thunderstorms near Portland.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Knoxville to Portland?
The road trip is about 186.7 miles (300.5 km) and usually takes 03h 29m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Monterey is a useful midpoint, sitting about 93.3 miles from Knoxville and 93.5 miles from Portland.
How much longer is the road route than the straight-line distance?
The direct path is about 150.8 miles (242.7 km), while the road route adds roughly 35.9 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 6:00 AM to 8:00 AM EDT. If you want a more comfortable same-day return, try to leave by 10:00 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $24.85 one way or $49.70 round trip. Estimated CO2 is about 58.6 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 1 hour time difference between Knoxville and Portland, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms around Knoxville and Showers And Thunderstorms Likely then Chance Showers And Thunderstorms near Portland.
Flight Path Map
This map shows the direct air route between Knoxville and Portland. Straight-line distance: 150.82 mi (242.72 km).
#1 Knoxville
The most populous city in Tennessee.
| Population | 190,223 |
| Coordinates | 35.9606400, -83.9207400 |
| Altitude | 276 |
| Country | United States |
#2 Portland
City in Sumner County, Tennessee, United States
| Population | 13,301 |
| Coordinates | 36.5817100, -86.5163800 |
| Altitude | 244 |
| Country | United States |
End: Portland (-86.51638, 36.58171)
Estimated Travel Time
Distance: 300 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 13m |
| 40 mph (64.37 km/h) | 04h 40m |
| 50 mph (80.47 km/h) | 03h 44m |
| 60 mph (96.56 km/h) | 03h 06m |
| 70 mph (112.65 km/h) | 02h 40m |
| 80 mph (129 km/h) | 02h 19m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $24.85 | $49.70 |
| Mid-grade | $4.25 | $28.03 | $56.05 |
| Premium | $4.65 | $30.67 | $61.34 |
| Diesel | $5.30 | $34.95 | $69.91 |
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 25, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.