How far is Napoleon, OH from Dayton, OH?
The driving distance from Napoleon, OH to Dayton, OH is about 123.3 miles (198.4 km), with a travel time of about 02h 12m by car.
- The straight-line flight distance is about 112.9 miles (181.7 km).
- For a round trip, plan for roughly 04h 24m 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 02h 12m.
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.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Rain Showers then Mostly Sunny
Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Napoleon and Dayton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Napoleon and Dayton.
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1
Start on East Clinton Street
26 m · 9 sec · East Clinton Street
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2
Turn left onto North Perry Street
10.1 mi · 15 min · North Perry Street
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3
Turn left onto Railway Avenue
1042 ft · 20 sec · Railway Avenue
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4
Turn right onto South Keyser Street
12.8 mi · 19 min · South Keyser Street
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5
Turn left
5.5 mi · 8 min
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6
Turn straight onto North Elm Street
13.5 mi · 18 min · North Elm Street
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7
Continue on North Perrysburg Road
816 ft · 14 sec · North Perrysburg Road
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8
Continue on Ottawa Road - South Perrysburg Road
2.5 mi · 4 min · Ottawa Road - South Perrysburg Road
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9
Continue on North West Street
3.2 mi · 5 min · North West Street
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10
Turn left onto West Grand Avenue
145 m · 10 sec · West Grand Avenue
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11
Turn right onto North Elizabeth Street
2531 ft · 47 sec · North Elizabeth Street
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12
Turn right onto West Wayne Street
84 m · 10 sec · West Wayne Street
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13
Turn left onto North West Street
2451 ft · 49 sec · North West Street
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14
Turn right onto West Elm Street
1529 ft · 31 sec · West Elm Street
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15
Turn left onto South Metcalf Street
1.5 mi · 3 min · South Metcalf Street
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16
Continue on South Dixie Highway
2.1 mi · 4 min · South Dixie Highway
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17
Turn left onto West Breese Road
1135 ft · 36 sec · West Breese Road
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18
Take the ramp right toward I 75 South: Dayton
1279 ft · 31 sec
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19
Merge slight left
65.5 mi · 1 hr 12 min
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20
Merge slight left
51 m · 2 sec
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21
Take the exit slight right toward SR 48: Main Street, Grand Avenue
1108 ft · 29 sec
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22
Turn left onto North Main Street
1.4 km · 2 min · North Main Street
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23
Arrive at your destination
0 m · 1 sec · South Main Street
Car Route Details
A richer read on the saved driving route between Napoleon 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 75 South
Merge slight left
65.5 mi · 01h 12m
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.
Slight Chance Rain Showers then Mostly Sunny leaving Napoleon 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 Napoleon to Dayton?
The road trip is about 123.3 miles (198.4 km) and usually takes 02h 12m 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?
Wapakoneta is a useful midpoint, sitting about 60.1 miles from Napoleon and 63.2 miles from Dayton.
How much longer is the road route than the straight-line distance?
The direct path is about 112.9 miles (181.7 km), while the road route adds roughly 10.4 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 2:06 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $16.12 one way or $32.23 round trip. Estimated CO2 is about 38.7 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Rain Showers then Mostly Sunny around Napoleon and Chance Showers And Thunderstorms near Dayton.
Stop Ideas Near Wapakoneta
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Wapakoneta.
Bryan
Waterloo
Flight Path Map
This map shows the direct air route between Napoleon and Dayton. Straight-line distance: 112.9 mi (181.7 km).
#1 Napoleon
City in and the county seat of Henry County, Ohio, United States
| Population | 8,147 |
| Coordinates | 41.3922700, -84.1252200 |
| Altitude | 207 |
| Country | United States |
#2 Dayton
The ninth most populous city in Ohio.
| Population | 139,907 |
| Coordinates | 39.7589500, -84.1916100 |
| Altitude | 225 |
| Country | United States |
End: South Main Street (-84.191655, 39.758942)
Estimated Travel Time
Distance: 198 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 06m |
| 40 mph (64.37 km/h) | 03h 04m |
| 50 mph (80.47 km/h) | 02h 27m |
| 60 mph (96.56 km/h) | 02h 03m |
| 70 mph (112.65 km/h) | 01h 45m |
| 80 mph (129 km/h) | 01h 32m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.71 | $16.12 | $32.23 |
| Mid-grade | $4.24 | $18.45 | $36.91 |
| Premium | $4.79 | $20.84 | $41.67 |
| Diesel | $4.30 | $18.72 | $37.44 |
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 Ohio · Apr 22, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.