How far is West Chester, OH from Saint Marys, OH?
The driving distance from West Chester, OH to Saint Marys, OH is about 193.4 miles (311.3 km), with a travel time of about 04h 01m by car.
- The straight-line flight distance is about 161.7 miles (260.2 km).
- For a round trip, plan for roughly 08h 02m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM EDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
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 04h 01m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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
Chance Showers And Thunderstorms then Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between West Chester and Saint Marys.
Turn-by-Turn Driving Directions
Step-by-step road directions between West Chester and Saint Marys.
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1
Start on the route
57 m · 4 sec
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2
Continue straight
8.7 mi · 15 min
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3
Turn slight right onto Dunlap Creek Road Southwest
1.6 mi · 4 min · Dunlap Creek Road Southwest
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4
At the end of the road, turn right
6.2 mi · 11 min
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5
At the end of the road, turn left
16.1 mi · 20 min
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6
Continue straight
47.8 mi · 55 min
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7
Continue straight
15.6 mi · 17 min
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8
Take the exit slight right toward I 270: Cleveland, Wheeling
1 mi · 1 min
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9
Keep slight right to continue on I 270 North
2274 ft · 30 sec
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10
Merge slight left onto Jack Nicklaus Freeway
12.3 mi · 14 min · Jack Nicklaus Freeway
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11
Take the exit slight right toward US 33 West, SR 161 West: Marysville, Avery-Muirfield Drive
2057 ft · 50 sec
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12
Keep slight left to continue on US 33 West, SR 161 West: Marysville
2240 ft · 42 sec
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13
Merge slight left
58.7 mi · 1 hr 9 min
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14
Turn left onto Market Street
22.1 mi · 27 min · Market Street
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15
Take the exit slight right toward SR 66: Saint Marys, Spencerville
555 ft · 14 sec
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16
Keep slight left
1.3 km · 2 min
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17
Turn straight
1.3 km · 2 min
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18
Turn right onto East Spring Street
1705 ft · 48 sec · East Spring Street
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19
Turn left onto South Front Street
32 m · 5 sec · South Front Street
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20
Arrive at your destination
0 m · 1 sec · South Front Street
Car Route Details
A richer read on the saved driving route between West Chester and Saint Marys.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
US 33 West
Merge slight left
58.7 mi · 01h 09m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Showers And Thunderstorms Likely leaving West Chester and Chance Showers And Thunderstorms then Showers And Thunderstorms near Saint Marys.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from West Chester to Saint Marys?
The road trip is about 193.4 miles (311.3 km) and usually takes 04h 01m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Huber Ridge is a useful midpoint, sitting about 96.6 miles from West Chester and 96.9 miles from Saint Marys.
How much longer is the road route than the straight-line distance?
The direct path is about 161.7 miles (260.2 km), while the road route adds roughly 31.7 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 6:00 AM to 8:00 AM EDT. If you want a more comfortable same-day return, try to leave by 8:58 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $25.31 one way or $50.61 round trip. Estimated CO2 is about 60.7 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms Likely around West Chester and Chance Showers And Thunderstorms then Showers And Thunderstorms near Saint Marys.
Stop Ideas Near Huber Ridge
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 Huber Ridge.
Columbus, OH
Flight Path Map
This map shows the direct air route between West Chester and Saint Marys. Straight-line distance: 161.66 mi (260.16 km).
#1 West Chester
The most populous city in Butler County, Ohio.
| Population | 62,791 |
| Coordinates | 40.2336800, -81.3442800 |
| Altitude | 354 |
| Country | United States |
#2 Saint Marys
City in Ohio, United States
| Population | 8,113 |
| Coordinates | 40.5422700, -84.3894000 |
| Altitude | 264 |
| Country | United States |
End: Saint Marys (-84.3894, 40.54227)
Estimated Travel Time
Distance: 311 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 26m |
| 40 mph (64.37 km/h) | 04h 50m |
| 50 mph (80.47 km/h) | 03h 52m |
| 60 mph (96.56 km/h) | 03h 13m |
| 70 mph (112.65 km/h) | 02h 45m |
| 80 mph (129 km/h) | 02h 24m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.71 | $25.31 | $50.61 |
| Mid-grade | $4.24 | $28.97 | $57.95 |
| Premium | $4.79 | $32.72 | $65.43 |
| Diesel | $4.30 | $29.40 | $58.79 |
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.