How far is West Union, OH from Dayton, OH?
The driving distance from West Union, OH to Dayton, OH is about 85.9 miles (138.2 km), with a travel time of about 01h 47m by car.
- The straight-line flight distance is about 75.1 miles (120.8 km).
- For a round trip, plan for roughly 03h 35m 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 47m.
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 Clinton 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 West Union and Dayton.
Turn-by-Turn Driving Directions
Step-by-step road directions between West Union and Dayton.
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1
Start on the route
46 m · 16 sec
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2
Turn left onto South Pleasant Street
42 m · 12 sec · South Pleasant Street
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3
Turn left onto East Main Street
160 m · 13 sec · East Main Street
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4
Turn right onto North Cross Street
28.6 mi · 43 min · North Cross Street
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5
Continue on South East Street
1507 ft · 32 sec · South East Street
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6
Turn left onto Muntz Street
711 ft · 16 sec · Muntz Street
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7
Turn right onto South High Street
1925 ft · 42 sec · South High Street
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8
Turn left onto West Main Street
710 ft · 16 sec · West Main Street
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9
Turn right onto North West Street
9.4 mi · 14 min · North West Street
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10
Continue on South South Street
14 mi · 18 min · South South Street
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11
Take the exit slight right toward US 68: Wilmington, Xenia
1489 ft · 40 sec
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12
Turn right
14.8 mi · 22 min
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13
Take the ramp left toward US 35 West: Dayton
1202 ft · 29 sec
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14
Merge slight left onto Xenia Bypass
16.2 mi · 21 min · Xenia Bypass
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15
Take the exit slight right toward SR 48: Main Street, Jefferson Street
3027 ft · 1 min
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16
Keep slight right to continue on Jefferson Street, Day Air Ballpark, Patterson boulevard
98 m · 8 sec
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17
Turn slight right onto South Jefferson Street
1801 ft · 45 sec · South Jefferson Street
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18
Turn left onto East 4th Street
157 m · 14 sec · East 4th Street
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19
Turn right onto South Main Street
92 m · 8 sec · South Main Street
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20
Arrive at your destination
0 m · 1 sec · South Main Street
Car Route Details
A richer read on the saved driving route between West Union and Dayton.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
North Cross Street
Turn right onto North Cross Street
28.6 mi · 00h 43m
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 West Union and Sunny near Dayton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from West Union to Dayton?
The road trip is about 85.9 miles (138.2 km) and usually takes 01h 47m 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?
New Vienna is a useful midpoint, sitting about 42.9 miles from West Union and 42.9 miles from Dayton.
How much longer is the road route than the straight-line distance?
The direct path is about 75.1 miles (120.8 km), while the road route adds roughly 10.8 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 2:54 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $11.23 one way or $22.45 round trip. Estimated CO2 is about 26.9 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around West Union and Sunny near Dayton.
Stop Ideas Near New Vienna
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 New Vienna.
Cincinnati, OH
Maysville
Cincinnati Museum Center at Union Terminal
South Portsmouth–South Shore station
Flight Path Map
This map shows the direct air route between West Union and Dayton. Straight-line distance: 75.07 mi (120.81 km).
#1 West Union
City in Iowa, United States
| Population | 3,147 |
| Coordinates | 38.7945200, -83.5451900 |
| Altitude | 290 |
| 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: 138 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 51m |
| 40 mph (64.37 km/h) | 02h 08m |
| 50 mph (80.47 km/h) | 01h 43m |
| 60 mph (96.56 km/h) | 01h 25m |
| 70 mph (112.65 km/h) | 01h 13m |
| 80 mph (129 km/h) | 01h 04m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.71 | $11.23 | $22.45 |
| Mid-grade | $4.24 | $12.85 | $25.71 |
| Premium | $4.79 | $14.51 | $29.03 |
| Diesel | $4.30 | $13.04 | $26.08 |
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.