How far is Somerset, OH from Dayton, OH?
The driving distance from Somerset, OH to Dayton, OH is about 117.8 miles (189.6 km), with a travel time of about 01h 57m by car.
- The straight-line flight distance is about 100.7 miles (162 km).
- For a round trip, plan for roughly 03h 55m 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 57m.
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.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Somerset and Dayton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Somerset and Dayton.
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1
Start on East Sheridan Avenue
29 m · 9 sec · East Sheridan Avenue
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2
Turn left
121 m · 34 sec
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3
Turn left onto East Main Street
545 ft · 11 sec · East Main Street
-
4
Exit the roundabout onto North Columbus Street
2.2 mi · 3 min · North Columbus Street
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5
Continue on Ohio State Route 13
11.6 mi · 18 min · Ohio State Route 13
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6
Take the ramp left
1625 ft · 40 sec
-
7
Merge slight left
32.5 mi · 37 min
-
8
Keep slight left to continue on South Innerbelt
1.5 km · 1 min · South Innerbelt
-
9
Continue on West Freeway
57.6 mi · 1 hr 3 min · West Freeway
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10
Take the exit slight right toward SR 4, SR 235: Dayton, New Carlisle
1730 ft · 42 sec
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11
Keep slight left to continue on SR 4, SR 235 South: Dayton
11.1 mi · 14 min
-
12
Take the exit slight right toward SR 48: Main Street, Grand Avenue
1108 ft · 29 sec
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13
Turn left onto North Main Street
1.4 km · 2 min · North Main Street
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14
Arrive at your destination
0 m · 1 sec · South Main Street
Car Route Details
A richer read on the saved driving route between Somerset and Dayton.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
West Freeway
Continue on West Freeway
57.6 mi · 01h 03m
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.
Clear leaving Somerset and Mostly Sunny near Dayton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Somerset to Dayton?
The road trip is about 117.8 miles (189.6 km) and usually takes 01h 57m 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 58.8 miles from Somerset and 59 miles from Dayton.
How much longer is the road route than the straight-line distance?
The direct path is about 100.7 miles (162 km), while the road route adds roughly 17.1 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 2:34 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $15.41 one way or $30.83 round trip. Estimated CO2 is about 37 kg one way.
What should you check before leaving?
Before you leave, expect Clear around Somerset and Mostly Sunny 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
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 Somerset and Dayton. Straight-line distance: 100.64 mi (161.97 km).
#1 Somerset
Village in Ohio, United States
| Population | 1,465 |
| Coordinates | 39.8070100, -82.2970900 |
| Altitude | 330 |
| 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: 190 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 55m |
| 40 mph (64.37 km/h) | 02h 56m |
| 50 mph (80.47 km/h) | 02h 21m |
| 60 mph (96.56 km/h) | 01h 57m |
| 70 mph (112.65 km/h) | 01h 40m |
| 80 mph (129 km/h) | 01h 28m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.71 | $15.41 | $30.83 |
| Mid-grade | $4.24 | $17.65 | $35.29 |
| Premium | $4.79 | $19.93 | $39.85 |
| Diesel | $4.30 | $17.90 | $35.81 |
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 · May 31, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.