How far is Dayton, OH from Napoleon, OH?
The driving distance from Dayton, OH to Napoleon, OH is about 121.2 miles (195 km), with a travel time of about 02h 34m by car.
- The straight-line flight distance is about 112.9 miles (181.7 km).
- For a round trip, plan for roughly 05h 08m 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 34m.
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.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Dayton and Napoleon.
Turn-by-Turn Driving Directions
Step-by-step road directions between Dayton and Napoleon.
-
1
Start on South Main Street
1.3 km · 2 min · South Main Street
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2
Take the ramp right toward I 75 North, SR 4 North: Toledo, Springfield
43 m · 3 sec
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3
Keep slight left to continue on I 75 North: Toledo
1458 ft · 36 sec
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4
Merge slight left
67.7 mi · 1 hr 14 min
-
5
Take the exit slight right toward SR 65: Lima, Uniopolis
957 ft · 30 sec
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6
Turn left onto St Johns Road
1.3 mi · 2 min · St Johns Road
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7
Continue on St Johns Avenue
3153 ft · 1 min · St Johns Avenue
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8
Turn slight right onto South Pine Street
1.4 km · 2 min · South Pine Street
-
9
Turn left onto East Elm Street
881 ft · 17 sec · East Elm Street
-
10
Turn right onto South Central Avenue
1974 ft · 39 sec · South Central Avenue
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11
Turn left onto East North Street
1277 ft · 26 sec · East North Street
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12
Turn right onto North Elizabeth Street
3010 ft · 58 sec · North Elizabeth Street
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13
Turn left onto West Grand Avenue
145 m · 12 sec · West Grand Avenue
-
14
Turn right onto North West Street
3.1 mi · 5 min · North West Street
-
15
Turn slight right onto Ottawa Road
2.6 mi · 4 min · Ottawa Road
-
16
Continue on South Perrysburg Road
816 ft · 14 sec · South Perrysburg Road
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17
Continue on Ottawa Road - North Perrysburg Road
13.5 mi · 18 min · Ottawa Road - North Perrysburg Road
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18
Continue on North Perry Street
1033 ft · 21 sec · North Perry Street
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19
Turn left onto North Defiance Street
5.3 mi · 8 min · North Defiance Street
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20
Turn right
12.8 mi · 19 min
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21
Turn left onto Railway Avenue
1042 ft · 21 sec · Railway Avenue
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22
At the end of the road, turn right onto North Wilhelm Street
10.1 mi · 15 min · North Wilhelm Street
-
23
Turn right onto East Clinton Street
26 m · 2 sec · East Clinton Street
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24
Arrive at your destination
0 m · 1 sec · East Clinton Street
Car Route Details
A richer read on the saved driving route between Dayton and Napoleon.
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 North
Merge slight left
67.7 mi · 01h 14m
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 Dayton and Mostly Sunny near Napoleon.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Dayton to Napoleon?
The road trip is about 121.2 miles (195 km) and usually takes 02h 34m 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 60.6 miles from Dayton and 60.5 miles from Napoleon.
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 8.3 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 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 1:22 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $15.82 one way or $31.64 round trip. Estimated CO2 is about 37.9 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Dayton and Mostly Sunny near Napoleon.
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 Dayton and Napoleon. Straight-line distance: 112.9 mi (181.7 km).
#1 Dayton
The ninth most populous city in Ohio.
| Population | 139,907 |
| Coordinates | 39.7589500, -84.1916100 |
| Altitude | 225 |
| Country | United States |
#2 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 |
End: Napoleon (-84.12522, 41.39227)
Estimated Travel Time
Distance: 195 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 02m |
| 40 mph (64.37 km/h) | 03h 01m |
| 50 mph (80.47 km/h) | 02h 25m |
| 60 mph (96.56 km/h) | 02h 01m |
| 70 mph (112.65 km/h) | 01h 43m |
| 80 mph (129 km/h) | 01h 30m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.71 | $15.82 | $31.64 |
| Mid-grade | $4.24 | $18.11 | $36.23 |
| Premium | $4.79 | $20.45 | $40.91 |
| Diesel | $4.30 | $18.38 | $36.76 |
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 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.