How far is Saint Marys, OH from Middletown, OH?
The driving distance from Saint Marys, OH to Middletown, OH is about 85.3 miles (137.3 km), with a travel time of about 01h 36m by car.
- The straight-line flight distance is about 71 miles (114.2 km).
- For a round trip, plan for roughly 03h 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 01h 36m.
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 Miami County, Ohio, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Rain Showers
Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Saint Marys and Middletown.
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint Marys and Middletown.
-
1
Start on South Front Street
32 m · 9 sec · South Front Street
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2
Turn right onto West Spring Street
1705 ft · 47 sec · West Spring Street
-
3
Turn left onto North Spruce Street
1.1 km · 1 min · North Spruce Street
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4
Take the ramp slight right
1953 ft · 48 sec
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5
Merge slight left
10.8 mi · 12 min
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6
Take the exit slight right toward I 75 South: Dayton
2159 ft · 53 sec
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7
Merge slight left
55.8 mi · 1 hr 1 min
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8
Merge slight left
15.6 mi · 19 min
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9
Take the exit slight right toward SR 73: Franklin, Springboro
1920 ft · 51 sec
-
10
Turn right onto East 2nd Street
1.7 mi · 3 min · East 2nd Street
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11
Turn left onto Riley Boulevard
1.1 mi · 2 min · Riley Boulevard
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12
Continue on Middletown Pike
1 mi · 2 min · Middletown Pike
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13
Continue on North Verity Parkway
4.3 mi · 7 min · North Verity Parkway
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14
Continue on North Canal Street
1621 ft · 38 sec · North Canal Street
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15
Turn left onto Central Avenue
1043 ft · 36 sec · Central Avenue
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16
Turn left onto Clark Street
37 m · 5 sec · Clark Street
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17
Arrive at your destination
0 m · 1 sec · Clark Street
Car Route Details
A richer read on the saved driving route between Saint Marys and Middletown.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 75 South
Merge slight left
55.8 mi · 01h 01m
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.
Chance Rain Showers leaving Saint Marys and Chance Rain Showers near Middletown.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Saint Marys to Middletown?
The road trip is about 85.3 miles (137.3 km) and usually takes 01h 36m 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?
Troy is a useful midpoint, sitting about 46.5 miles from Saint Marys and 38.8 miles from Middletown.
How much longer is the road route than the straight-line distance?
The direct path is about 71 miles (114.2 km), while the road route adds roughly 14.3 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 3:16 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $11.15 one way or $22.30 round trip. Estimated CO2 is about 26.7 kg one way.
What should you check before leaving?
Before you leave, expect Chance Rain Showers around Saint Marys and Chance Rain Showers near Middletown.
Stop Ideas Near Troy
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
B & D Pizza & Subs
Gettysburg Community Park
Tipp City Hall
Lazy R Campground
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Troy.
Connersville station
Columbus, OH
Cincinnati, OH
Cincinnati Museum Center at Union Terminal
Flight Path Map
This map shows the direct air route between Saint Marys and Middletown. Straight-line distance: 70.97 mi (114.22 km).
#1 Saint Marys
City in Ohio, United States
| Population | 8,113 |
| Coordinates | 40.5422700, -84.3894000 |
| Altitude | 264 |
| Country | United States |
#2 Middletown
The most populous city in Butler County, Ohio.
| Population | 46,140 |
| Coordinates | 39.5150600, -84.3982800 |
| Altitude | 200 |
| Country | United States |
End: Clark Street (-84.398624, 39.515154)
Estimated Travel Time
Distance: 137 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 50m |
| 40 mph (64.37 km/h) | 02h 08m |
| 50 mph (80.47 km/h) | 01h 42m |
| 60 mph (96.56 km/h) | 01h 25m |
| 70 mph (112.65 km/h) | 01h 13m |
| 80 mph (129 km/h) | 01h 03m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.71 | $11.15 | $22.30 |
| Mid-grade | $4.24 | $12.77 | $25.54 |
| Premium | $4.79 | $14.42 | $28.84 |
| Diesel | $4.30 | $12.96 | $25.91 |
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 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.