How far is Harmony, OH from Park Layne, OH?
The driving distance from Harmony, OH to Park Layne, OH is about 23.9 miles (38.5 km), with a travel time of about 00h 30m by car.
- The straight-line flight distance is about 18.3 miles (29.5 km).
- For a round trip, plan for roughly 01h 00m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM EDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 00h 30m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
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.
Township of Ohio
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 Harmony and Park Layne.
Turn-by-Turn Driving Directions
Step-by-step road directions between Harmony and Park Layne.
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1
Start on Center Street
104 m · 17 sec · Center Street
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2
Turn right onto East National Road
2096 ft · 40 sec · East National Road
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3
Take the ramp right toward I 70 West: Dayton
1887 ft · 46 sec
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4
Merge slight left
20.2 mi · 22 min
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5
Take the exit slight right toward SR 4, SR 235: Dayton, New Carlisle
1730 ft · 42 sec
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6
Keep slight right to continue on SR 235 North, I 70 Alternate: New Carlisle
849 ft · 21 sec
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7
Turn straight
1.6 mi · 2 min
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8
Turn right onto Styer Drive
2949 ft · 2 min · Styer Drive
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9
Turn right onto Weinland Street
911 ft · 42 sec · Weinland Street
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10
Turn right onto Frayne Drive
90 m · 15 sec · Frayne Drive
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11
Turn right onto East Carpenter Drive
102 m · 15 sec · East Carpenter Drive
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12
Arrive at your destination
0 m · 1 sec · West Carpenter Drive
Car Route Details
A richer read on the saved driving route between Harmony and Park Layne.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
I 70 West
Merge slight left
20.2 mi · 00h 22m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Sunny leaving Harmony and Sunny near Park Layne.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Harmony to Park Layne?
The road trip is about 23.9 miles (38.5 km) and usually takes 00h 30m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Mad River is a useful midpoint, sitting about 11.9 miles from Harmony and 12 miles from Park Layne.
How much longer is the road route than the straight-line distance?
The direct path is about 18.3 miles (29.5 km), while the road route adds roughly 5.6 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 7:00 AM to 7:00 PM EDT. If you want a more comfortable same-day return, try to leave by 7:30 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.15 one way or $6.30 round trip. Estimated CO2 is about 7.6 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Harmony and Sunny near Park Layne.
Stop Ideas Near Mad River
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Historic City Hall Bell
Springfield City Hall
Xenia City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Mad River.
Columbus, OH
Cincinnati, OH
Cincinnati Museum Center at Union Terminal
Connersville station
Flight Path Map
This map shows the direct air route between Harmony and Park Layne. Straight-line distance: 18.32 mi (29.49 km).
#1 Harmony
Human settlement in United States of America
| Population | 2,649 |
| Coordinates | 39.9228400, -83.6971500 |
| Altitude | 325 |
| Country | United States |
#2 Park Layne
Census-designated place in Clark County, Ohio
| Population | 4,343 |
| Coordinates | 39.8864500, -84.0396600 |
| Altitude | 257 |
| Country | United States |
End: Park Layne (-84.03966, 39.88645)
Estimated Travel Time
Distance: 39 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 47m |
| 40 mph (64.37 km/h) | 00h 35m |
| 50 mph (80.47 km/h) | 00h 28m |
| 60 mph (96.56 km/h) | 00h 23m |
| 70 mph (112.65 km/h) | 00h 20m |
| 80 mph (129 km/h) | 00h 17m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.71 | $3.15 | $6.30 |
| Mid-grade | $4.24 | $3.61 | $7.21 |
| Premium | $4.79 | $4.07 | $8.14 |
| Diesel | $4.30 | $3.66 | $7.32 |
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.