How far is Mansfield, OH from Saint Marys, OH?
The driving distance from Mansfield, OH to Saint Marys, OH is about 120.7 miles (194.3 km), with a travel time of about 02h 17m by car.
- The straight-line flight distance is about 99.4 miles (159.9 km).
- For a round trip, plan for roughly 04h 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 02h 17m.
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.
Village in Ohio, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Rain Showers
Showers And Thunderstorms Likely
Driving Route Map
The map below follows the saved road route between Mansfield and Saint Marys.
Turn-by-Turn Driving Directions
Step-by-step road directions between Mansfield and Saint Marys.
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1
Start on South Main Street
120 m · 12 sec · South Main Street
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2
Turn right onto West 2nd Street
663 ft · 13 sec · West 2nd Street
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3
Turn right onto South Mulberry Street
1.2 km · 1 min · South Mulberry Street
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4
Turn slight left onto Springmill Street
1.2 mi · 3 min · Springmill Street
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5
Take the ramp left toward US 30 West: Bucyrus
1771 ft · 44 sec
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6
Merge slight left onto Martin Luther King Jr. Freeway
1 mi · 1 min · Martin Luther King Jr. Freeway
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7
Keep slight left to continue on Martin Luther King Jr. Freeway
37.8 mi · 41 min · Martin Luther King Jr. Freeway
-
8
Keep slight right
6.3 mi · 8 min
-
9
Keep slight left
34.8 mi · 37 min
-
10
Take the exit slight right toward SR 696: Dayton, Toledo
2927 ft · 1 min · US 30 West to East Lincoln Highway
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11
At the end of the road, turn left onto East Lincoln Highway
2371 ft · 54 sec · East Lincoln Highway
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12
Take the exit left
2841 ft · 1 min
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13
Merge slight left
24.1 mi · 26 min
-
14
Take the exit slight right toward US 33: Bellefontaine, Saint Marys
784 ft · 22 sec
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15
Keep slight left to continue on US 33 East: Bellefontaine
38 m · 5 sec
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16
Turn right
10.6 mi · 11 min
-
17
Take the exit slight right toward SR 66: Saint Marys, Spencerville
555 ft · 14 sec
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18
Keep slight left
1.3 km · 2 min
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19
Turn straight
1.3 km · 2 min
-
20
Turn right onto East Spring Street
1705 ft · 48 sec · East Spring Street
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21
Turn left onto South Front Street
32 m · 5 sec · South Front Street
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22
Arrive at your destination
0 m · 1 sec · South Front Street
Car Route Details
A richer read on the saved driving route between Mansfield and Saint Marys.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Martin Luther King Jr. Freeway
Keep slight left to continue on Martin Luther King Jr. Freeway
37.8 mi · 00h 41m
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.
Slight Chance Rain Showers leaving Mansfield and Showers And Thunderstorms Likely near Saint Marys.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Mansfield to Saint Marys?
The road trip is about 120.7 miles (194.3 km) and usually takes 02h 17m 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?
Forest is a useful midpoint, sitting about 60.3 miles from Mansfield and 60.5 miles from Saint Marys.
How much longer is the road route than the straight-line distance?
The direct path is about 99.4 miles (159.9 km), while the road route adds roughly 21.3 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 1:54 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $16.32 one way or $32.63 round trip. Estimated CO2 is about 37.9 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Rain Showers around Mansfield and Showers And Thunderstorms Likely near Saint Marys.
Stop Ideas Near Forest
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 Forest.
Martin Luther King, Jr. Plaza
Sandusky
Columbus, OH
Bryan
Flight Path Map
This map shows the direct air route between Mansfield and Saint Marys. Straight-line distance: 99.36 mi (159.91 km).
#1 Mansfield
The most populous city in Richland County, Ohio.
| Population | 46,125 |
| Coordinates | 40.7583900, -82.5154500 |
| Altitude | 379 |
| 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: 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 | $3.83 | $16.32 | $32.63 |
| Mid-grade | $4.38 | $18.67 | $37.34 |
| Premium | $4.93 | $20.99 | $41.98 |
| Diesel | $6.07 | $25.85 | $51.70 |
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 · Oct 15, 2026