How far is Johnson City, TN from Dayton, TN?
The driving distance from Johnson City, TN to Dayton, TN is about 184.5 miles (296.9 km), with a travel time of about 03h 31m by car.
- The straight-line flight distance is about 159.2 miles (256.2 km).
- For a round trip, plan for roughly 07h 03m 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 31m.
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.
Census-designated place in Knox County, Tennessee
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Showers And Thunderstorms
Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Johnson City and Dayton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Johnson City and Dayton.
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1
Start on the route
132 m · 35 sec
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2
Turn left onto Buffalo Street
1620 ft · 56 sec · Buffalo Street
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3
Turn left onto North Roan Street
1633 ft · 37 sec · North Roan Street
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4
Turn right onto East Watauga Avenue
1812 ft · 45 sec · East Watauga Avenue
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5
Turn left onto Oak Street
135 m · 11 sec · Oak Street
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6
Take the ramp straight
962 ft · 24 sec
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7
Merge slight left onto James H. Quillen Parkway
13.7 mi · 16 min · James H. Quillen Parkway
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8
Take the exit slight right toward I 81 South: Knoxville
1100 ft · 38 sec
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9
Merge slight left
56.4 mi · 1 hr
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10
Continue on I 40 West: Knoxville
1.1 km · 45 sec
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11
Merge slight left
52.8 mi · 59 min
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12
Keep slight right to continue on Nashville
20.2 mi · 22 min
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13
Take the exit slight right toward US 27, TN 61: Harriman, Rockwood
1143 ft · 30 sec
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14
Turn left onto South Roane Street
2.3 mi · 3 min · South Roane Street
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15
Continue on North Gateway Avenue
6.2 mi · 7 min · North Gateway Avenue
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16
Continue on Spring City Highway
4.4 mi · 5 min · Spring City Highway
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17
Continue on Rhea County Highway
25.9 mi · 33 min · Rhea County Highway
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18
Take the exit right
61 m · 6 sec
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19
Turn straight onto 3rd Avenue
734 ft · 18 sec · 3rd Avenue
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20
Turn left onto Church Street
107 m · 18 sec · Church Street
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21
Turn right onto 2nd Avenue
92 m · 13 sec · 2nd Avenue
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22
Arrive at your destination
0 m · 1 sec · 2nd Avenue
Car Route Details
A richer read on the saved driving route between Johnson City and Dayton.
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 81 South
Merge slight left
56.4 mi · 01h 00m
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.
Chance Showers And Thunderstorms leaving Johnson City and Chance Showers And Thunderstorms near Dayton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Johnson City to Dayton?
The road trip is about 184.5 miles (296.9 km) and usually takes 03h 31m 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?
Mascot is a useful midpoint, sitting about 92.1 miles from Johnson City and 92.3 miles from Dayton.
How much longer is the road route than the straight-line distance?
The direct path is about 159.2 miles (256.2 km), while the road route adds roughly 25.3 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 9:56 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $24.55 one way or $49.10 round trip. Estimated CO2 is about 57.9 kg one way.
What should you check before leaving?
Before you leave, expect Chance Showers And Thunderstorms around Johnson City and Chance Showers And Thunderstorms near Dayton.
Flight Path Map
This map shows the direct air route between Johnson City and Dayton. Straight-line distance: 159.21 mi (256.23 km).
#1 Johnson City
The most populous city in Washington County, Tennessee.
| Population | 66,906 |
| Coordinates | 36.3134400, -82.3534700 |
| Altitude | 498 |
| Country | United States |
#2 Dayton
City and county seat in Rhea County, Tennessee, United States
| Population | 7,332 |
| Coordinates | 35.4939600, -85.0124500 |
| Altitude | 212 |
| Country | United States |
End: Dayton (-85.01245, 35.49396)
Estimated Travel Time
Distance: 297 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 08m |
| 40 mph (64.37 km/h) | 04h 36m |
| 50 mph (80.47 km/h) | 03h 41m |
| 60 mph (96.56 km/h) | 03h 04m |
| 70 mph (112.65 km/h) | 02h 38m |
| 80 mph (129 km/h) | 02h 18m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $24.55 | $49.10 |
| Mid-grade | $4.25 | $27.69 | $55.37 |
| Premium | $4.65 | $30.30 | $60.60 |
| Diesel | $5.30 | $34.53 | $69.06 |
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 13, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.