How far is Dayton, OH from Saint Henry, OH?
The driving distance from Dayton, OH to Saint Henry, OH is about 60.9 miles (98 km), with a travel time of about 01h 19m by car.
- The straight-line flight distance is about 51.3 miles (82.6 km).
- For a round trip, plan for roughly 02h 38m 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 01h 19m.
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.
City in Darke County, Ohio, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Dayton and Saint Henry.
Turn-by-Turn Driving Directions
Step-by-step road directions between Dayton and Saint Henry.
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1
Start on South Main Street
757 ft · 30 sec · South Main Street
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2
Turn left onto West 2nd Street
2417 ft · 1 min · West 2nd Street
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3
Continue on West 2nd Street
668 ft · 13 sec · West 2nd Street
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4
Continue on West 1st Street
116 m · 7 sec · West 1st Street
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5
Continue on Salem Avenue
11.4 mi · 17 min · Salem Avenue
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6
Take the exit slight right toward SR 49 North: Phillipsburg, Greenville
1806 ft · 44 sec
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7
Keep slight right to continue on SR 49 North: Phillipsburg, Greenville
19.9 mi · 23 min
-
8
Take the exit right
1374 ft · 38 sec
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9
Merge slight left
22.9 mi · 29 min
-
10
Turn left onto Fort Recovery-Minster Road
3 mi · 4 min · Fort Recovery-Minster Road
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11
Turn right
1.8 mi · 3 min
-
12
Turn left onto East Main Street
2966 ft · 59 sec · East Main Street
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13
Arrive at your destination
0 m · 1 sec · East Main Street
Car Route Details
A richer read on the saved driving route between Dayton and Saint Henry.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
SR 49 North
Merge slight left
22.9 mi · 00h 29m
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 Sunny near Saint Henry.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Dayton to Saint Henry?
The road trip is about 60.9 miles (98 km) and usually takes 01h 19m 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?
Greenville is a useful midpoint, sitting about 30.4 miles from Dayton and 30.4 miles from Saint Henry.
How much longer is the road route than the straight-line distance?
The direct path is about 51.3 miles (82.6 km), while the road route adds roughly 9.6 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 3:52 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.97 one way or $15.93 round trip. Estimated CO2 is about 19.1 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Dayton and Sunny near Saint Henry.
Stop Ideas Near Greenville
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Darke County Visitors Bureau
Advance America
Greenville City Hall
Arcanum Community of Faith Church
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Greenville.
Connersville station
Cincinnati, OH
Cincinnati Museum Center at Union Terminal
Flight Path Map
This map shows the direct air route between Dayton and Saint Henry. Straight-line distance: 51.3 mi (82.56 km).
#1 Dayton
The ninth most populous city in Ohio.
| Population | 139,907 |
| Coordinates | 39.7589500, -84.1916100 |
| Altitude | 225 |
| Country | United States |
#2 Saint Henry
Human settlement in Mercer County, Ohio, United States of America
| Population | 2,574 |
| Coordinates | 40.4175500, -84.6396800 |
| Altitude | 296 |
| Country | United States |
End: Saint Henry (-84.63968, 40.41755)
Estimated Travel Time
Distance: 98 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 01m |
| 40 mph (64.37 km/h) | 01h 31m |
| 50 mph (80.47 km/h) | 01h 13m |
| 60 mph (96.56 km/h) | 01h 00m |
| 70 mph (112.65 km/h) | 00h 52m |
| 80 mph (129 km/h) | 00h 45m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.71 | $7.97 | $15.93 |
| Mid-grade | $4.24 | $9.12 | $18.24 |
| Premium | $4.79 | $10.30 | $20.60 |
| Diesel | $4.30 | $9.25 | $18.51 |
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.