How far is Mentor, OH from Saint Marys, OH?
The driving distance from Mentor, OH to Saint Marys, OH is about 217 miles (349.3 km), with a travel time of about 04h 06m by car.
- The straight-line flight distance is about 176.7 miles (284.4 km).
- For a round trip, plan for roughly 08h 13m 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 06m.
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.
Village in Crawford and Richland Counties in U.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms Likely
Driving Route Map
The map below follows the saved road route between Mentor and Saint Marys.
Turn-by-Turn Driving Directions
Step-by-step road directions between Mentor and Saint Marys.
-
1
Start on the route
35 m · 13 sec
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2
At the end of the road, turn left onto Center Street
1.2 mi · 3 min · Center Street
-
3
Take the ramp right toward I 90 West: Cleveland
2251 ft · 55 sec
-
4
Merge slight left
5 mi · 6 min
-
5
Keep slight left
13.9 mi · 17 min
-
6
Merge slight right onto Outerbelt East Freeway
3.6 mi · 4 min · Outerbelt East Freeway
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7
Keep slight left
24.3 mi · 27 min
-
8
Merge slight left
43.1 mi · 46 min
-
9
Take the exit slight right toward US 30: Wooster, Mansfield
1339 ft · 36 sec
-
10
Keep slight left to continue on US 30 West: Mansfield
1983 ft · 38 sec
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11
Merge slight left
7.6 mi · 10 min
-
12
Keep slight left to continue on Martin Luther King Jr. Freeway
37.8 mi · 41 min · Martin Luther King Jr. Freeway
-
13
Keep slight right
6.3 mi · 8 min
-
14
Keep slight left
34.8 mi · 37 min
-
15
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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16
At the end of the road, turn left onto East Lincoln Highway
2371 ft · 54 sec · East Lincoln Highway
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17
Take the exit left
2841 ft · 1 min
-
18
Merge slight left
24.1 mi · 26 min
-
19
Take the exit slight right toward US 33: Bellefontaine, Saint Marys
784 ft · 22 sec
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20
Keep slight left to continue on US 33 East: Bellefontaine
38 m · 5 sec
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21
Turn right
10.6 mi · 11 min
-
22
Take the exit slight right toward SR 66: Saint Marys, Spencerville
555 ft · 14 sec
-
23
Keep slight left
1.3 km · 2 min
-
24
Turn straight
1.3 km · 2 min
-
25
Turn right onto East Spring Street
1705 ft · 48 sec · East Spring Street
-
26
Turn left onto South Front Street
32 m · 5 sec · South Front Street
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27
Arrive at your destination
0 m · 1 sec · South Front Street
Car Route Details
A richer read on the saved driving route between Mentor 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.
Outerbelt East Freeway
Merge slight left
43.1 mi · 00h 46m
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.
Mostly Cloudy leaving Mentor 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 Mentor to Saint Marys?
The road trip is about 217 miles (349.3 km) and usually takes 04h 06m 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?
Crestline is a useful midpoint, sitting about 108.4 miles from Mentor and 108.7 miles from Saint Marys.
How much longer is the road route than the straight-line distance?
The direct path is about 176.7 miles (284.4 km), while the road route adds roughly 40.3 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 6:00 AM to 8:00 AM EDT. If you want a more comfortable same-day return, try to leave by 8:46 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $29.34 one way or $58.68 round trip. Estimated CO2 is about 68.1 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around Mentor and Showers And Thunderstorms Likely near Saint Marys.
Stop Ideas Near Crestline
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 Crestline.
Sandusky
Elyria
Columbus, OH
Martin Luther King, Jr. Plaza
Flight Path Map
This map shows the direct air route between Mentor and Saint Marys. Straight-line distance: 176.74 mi (284.44 km).
#1 Mentor
A city in Lake County, Ohio.
| Population | 47,090 |
| Coordinates | 41.6661600, -81.3395500 |
| Altitude | 211 |
| 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: 349 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 13m |
| 40 mph (64.37 km/h) | 05h 25m |
| 50 mph (80.47 km/h) | 04h 20m |
| 60 mph (96.56 km/h) | 03h 37m |
| 70 mph (112.65 km/h) | 03h 06m |
| 80 mph (129 km/h) | 02h 42m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.83 | $29.34 | $58.68 |
| Mid-grade | $4.38 | $33.57 | $67.15 |
| Premium | $4.93 | $37.74 | $75.48 |
| Diesel | $6.07 | $46.48 | $92.96 |
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