How far is Portland, TN from Knoxville, TN?
The driving distance from Portland, TN to Knoxville, TN is about 187.2 miles (301.3 km), with a travel time of about 03h 02m by car.
- The straight-line flight distance is about 150.8 miles (242.7 km).
- For a round trip, plan for roughly 06h 04m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM CDT.
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 02m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
This departure sits inside the recommended comfort window for the route.
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 Likely then Chance Showers And Thunderstorms
Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Portland and Knoxville.
Turn-by-Turn Driving Directions
Step-by-step road directions between Portland and Knoxville.
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1
Start on North Broadway
17.6 mi · 20 min · North Broadway
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2
Take the exit slight right
89 m · 8 sec
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3
Merge slight left onto South Water Avenue
2.1 mi · 3 min · South Water Avenue
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4
Continue straight
7.1 mi · 12 min
-
5
Continue straight
3.6 mi · 4 min
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6
Turn left onto I 40 East: Knoxville
2310 ft · 58 sec
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7
Merge slight left
152.3 mi · 2 hr 46 min
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8
Keep slight left
2.9 mi · 4 min
-
9
Take the exit slight right toward Convention Center, East Tennessee History Center, Museum of Art
2116 ft · 28 sec
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10
Keep slight left to continue on Convention Center, East Tennessee History Center, Museum of Art
2403 ft · 56 sec
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11
Continue on Henley Street
1238 ft · 27 sec · Henley Street
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12
Continue on Henley Street
78 m · 12 sec · Henley Street
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13
Arrive at your destination
0 m · 1 sec · Henley Street
Car Route Details
A richer read on the saved driving route between Portland and Knoxville.
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 40 East
Merge slight left
152 mi · 02h 46m
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 Likely then Chance Showers And Thunderstorms leaving Portland and Showers And Thunderstorms near Knoxville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Portland to Knoxville?
The road trip is about 187.2 miles (301.3 km) and usually takes 03h 02m 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 93.5 miles from Portland and 93.7 miles from Knoxville.
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 36.4 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 6:00 AM to 8:00 AM CDT. If you want a more comfortable same-day return, try to leave by 10:56 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $24.93 one way or $49.85 round trip. Estimated CO2 is about 58.7 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 1 hour time difference between Portland and Knoxville, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms Likely then Chance Showers And Thunderstorms around Portland and Showers And Thunderstorms near Knoxville.
Flight Path Map
This map shows the direct air route between Portland and Knoxville. Straight-line distance: 150.82 mi (242.72 km).
#1 Portland
City in Sumner County, Tennessee, United States
| Population | 13,301 |
| Coordinates | 36.5817100, -86.5163800 |
| Altitude | 244 |
| Country | United States |
#2 Knoxville
The most populous city in Tennessee.
| Population | 190,223 |
| Coordinates | 35.9606400, -83.9207400 |
| Altitude | 276 |
| Country | United States |
End: US 11 (-83.920795, 35.960617)
Estimated Travel Time
Distance: 301 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 14m |
| 40 mph (64.37 km/h) | 04h 40m |
| 50 mph (80.47 km/h) | 03h 44m |
| 60 mph (96.56 km/h) | 03h 07m |
| 70 mph (112.65 km/h) | 02h 40m |
| 80 mph (129 km/h) | 02h 20m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $24.93 | $49.85 |
| Mid-grade | $4.25 | $28.11 | $56.22 |
| Premium | $4.65 | $30.76 | $61.53 |
| Diesel | $5.30 | $35.06 | $70.12 |
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.