How far is Dayton, OH from Defiance, OH?
The driving distance from Dayton, OH to Defiance, OH is about 119.6 miles (192.4 km), with a travel time of about 02h 31m by car.
- The straight-line flight distance is about 105.8 miles (170.2 km).
- For a round trip, plan for roughly 05h 03m 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 31m.
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
Partly Sunny
Driving Route Map
The map below follows the saved road route between Dayton and Defiance.
Turn-by-Turn Driving Directions
Step-by-step road directions between Dayton and Defiance.
-
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
-
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
-
7
Continue on St Johns Avenue
3153 ft · 1 min · St Johns Avenue
-
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
-
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
-
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
-
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
25.5 mi · 38 min · North Defiance Street
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20
Enter the roundabout and take exit 2 toward Ottawa Avenue;Cleveland Avenue
33 m · 2 sec · Ottawa Avenue
-
21
Exit the rotary onto Ottawa Avenue
1.5 km · 1 min · Ottawa Avenue
-
22
Continue on Douglas Street
584 ft · 12 sec · Douglas Street
-
23
Turn left onto East 2nd Street
1386 ft · 26 sec · East 2nd Street
-
24
Turn right onto Auglaize Street
8 m · 1 sec · Auglaize Street
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25
Arrive at your destination
0 m · 1 sec · Auglaize Street
Car Route Details
A richer read on the saved driving route between Dayton and Defiance.
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.
Mostly Sunny leaving Dayton and Partly Sunny near Defiance.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Dayton to Defiance?
The road trip is about 119.6 miles (192.4 km) and usually takes 02h 31m 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 59.8 miles from Dayton and 59.7 miles from Defiance.
How much longer is the road route than the straight-line distance?
The direct path is about 105.8 miles (170.2 km), while the road route adds roughly 13.8 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 1:26 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $15.64 one way or $31.27 round trip. Estimated CO2 is about 37.5 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Dayton and Partly Sunny near Defiance.
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 Defiance. Straight-line distance: 105.76 mi (170.2 km).
#1 Dayton
The ninth most populous city in Ohio.
| Population | 139,907 |
| Coordinates | 39.7589500, -84.1916100 |
| Altitude | 225 |
| Country | United States |
#2 Defiance
City in and the county seat of Defiance County, Ohio, United States
| Population | 16,482 |
| Coordinates | 41.2844900, -84.3557800 |
| Altitude | 206 |
| Country | United States |
End: Defiance (-84.35578, 41.28449)
Estimated Travel Time
Distance: 192 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 58m |
| 40 mph (64.37 km/h) | 02h 59m |
| 50 mph (80.47 km/h) | 02h 23m |
| 60 mph (96.56 km/h) | 01h 59m |
| 70 mph (112.65 km/h) | 01h 42m |
| 80 mph (129 km/h) | 01h 29m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.71 | $15.64 | $31.27 |
| Mid-grade | $4.24 | $17.90 | $35.80 |
| Premium | $4.79 | $20.21 | $40.43 |
| Diesel | $4.30 | $18.16 | $36.33 |
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 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.