How far is Mount Vernon, OH from Dayton, OH?
The driving distance from Mount Vernon, OH to Dayton, OH is about 120.8 miles (194.4 km), with a travel time of about 02h 06m by car.
- The straight-line flight distance is about 100.3 miles (161.4 km).
- For a round trip, plan for roughly 04h 13m 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 06m.
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.
Census-designated place in Franklin County, Ohio
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms Likely
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Mount Vernon and Dayton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Mount Vernon and Dayton.
-
1
Start on Public Square
23 m · 5 sec · Public Square
-
2
Exit the rotary onto South Main Street
2712 ft · 57 sec · South Main Street
-
3
Continue on Newark Road
119 m · 20 sec · Newark Road
-
4
Turn right onto South Main Street
1 mi · 2 min · South Main Street
-
5
Continue on Granville Road
7.4 mi · 14 min · Granville Road
-
6
Continue on North Street Road
2.7 mi · 5 min · North Street Road
-
7
Turn right onto Johnstown-Utica Road Northwest
9.9 mi · 11 min · Johnstown-Utica Road Northwest
-
8
Continue on East Coshocton Street
1.8 mi · 2 min · East Coshocton Street
-
9
Continue on Johnstown-Utica Road Northwest
3.2 mi · 4 min · Johnstown-Utica Road Northwest
-
10
Continue on Johnstown Road
3.5 mi · 5 min · Johnstown Road
-
11
Continue on East Main Street
1.1 km · 51 sec · East Main Street
-
12
Enter the roundabout and take exit 2 toward Johnstown Road
31 m · 1 sec · Johnstown Road
-
13
Exit the roundabout onto Johnstown Road
1.2 mi · 1 min · Johnstown Road
-
14
Enter the roundabout and take exit 2 toward Johnstown Road
35 m · 2 sec · Johnstown Road
-
15
Exit the roundabout onto Johnstown Road
1.1 mi · 1 min · Johnstown Road
-
16
Enter the roundabout and take exit 2 toward East Johnstown Road
41 m · 2 sec · East Johnstown Road
-
17
Exit the roundabout onto East Johnstown Road
2.8 mi · 6 min · East Johnstown Road
-
18
Continue on Mill Street
2969 ft · 1 min · Mill Street
-
19
At the end of the road, turn right onto Granville Street
7.3 mi · 9 min · Granville Street
-
20
Keep slight right
4.5 mi · 6 min
-
21
Merge slight right onto West Freeway
54.2 mi · 58 min · West Freeway
-
22
Take the exit slight right toward SR 4, SR 235: Dayton, New Carlisle
1730 ft · 42 sec
-
23
Keep slight left to continue on SR 4, SR 235 South: Dayton
11.1 mi · 14 min
-
24
Take the exit slight right toward SR 48: Main Street, Grand Avenue
1108 ft · 29 sec
-
25
Turn left onto North Main Street
1.4 km · 2 min · North Main Street
-
26
Arrive at your destination
0 m · 1 sec · South Main Street
Car Route Details
A richer read on the saved driving route between Mount Vernon and Dayton.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
West Freeway
Merge slight right onto West Freeway
54.2 mi · 00h 58m
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.
Showers And Thunderstorms Likely leaving Mount Vernon and Slight Chance Showers And Thunderstorms then Showers And Thunderstorms near Dayton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Mount Vernon to Dayton?
The road trip is about 120.8 miles (194.4 km) and usually takes 02h 06m 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?
Lake Darby is a useful midpoint, sitting about 57.5 miles from Mount Vernon and 63.3 miles from Dayton.
How much longer is the road route than the straight-line distance?
The direct path is about 100.3 miles (161.4 km), while the road route adds roughly 20.5 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 2:16 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $15.78 one way or $31.57 round trip. Estimated CO2 is about 37.9 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms Likely around Mount Vernon and Slight Chance Showers And Thunderstorms then Showers And Thunderstorms near Dayton.
Stop Ideas Near Lake Darby
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
London City Hall
Columbus Mayor's Office
City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Lake Darby.
Columbus, OH
Flight Path Map
This map shows the direct air route between Mount Vernon and Dayton. Straight-line distance: 100.28 mi (161.38 km).
#1 Mount Vernon
City in Knox County, Ohio, United States
| Population | 16,660 |
| Coordinates | 40.3934000, -82.4857200 |
| Altitude | 305 |
| 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: 194 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 01m |
| 40 mph (64.37 km/h) | 03h 01m |
| 50 mph (80.47 km/h) | 02h 24m |
| 60 mph (96.56 km/h) | 02h 00m |
| 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 | $15.78 | $31.57 |
| Mid-grade | $4.24 | $18.07 | $36.14 |
| Premium | $4.79 | $20.41 | $40.81 |
| Diesel | $4.30 | $18.34 | $36.67 |
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.