How far is Kansas City, KS from Saint Marys, KS?
The driving distance from Kansas City, KS to Saint Marys, KS is about 215.4 miles (346.6 km), with a travel time of about 03h 53m by car.
- The straight-line flight distance is about 189.9 miles (305.6 km).
- For a round trip, plan for roughly 07h 46m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM CST.
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 03h 53m.
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.
County seat of Lyon County, Kansas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Drizzle then Mostly Cloudy
Partly Cloudy
Driving Route Map
The map below follows the saved road route between Kansas City and Saint Marys.
Turn-by-Turn Driving Directions
Step-by-step road directions between Kansas City and Saint Marys.
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1
Start on the route
45 m · 13 sec
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2
Turn right onto Armstrong Avenue
86 m · 14 sec · Armstrong Avenue
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3
Turn right onto North 7th Street Trafficway
1.3 mi · 3 min · North 7th Street Trafficway
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4
Take the ramp slight right toward I 70 West, US 24 West, US 40 West, US 69 South: Topeka
54.3 mi · 56 min
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5
Keep slight left to continue on Kansas Turnpike
131.7 mi · 2 hr 12 min · Kansas Turnpike
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6
Take the exit slight right toward US 54, US 400
2804 ft · 1 min
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7
Merge slight left onto Vietnam Veterans Memorial Highway
23.7 mi · 30 min · Vietnam Veterans Memorial Highway
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8
Turn right onto South 247th Street West
3 mi · 7 min · South 247th Street West
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9
Turn left onto West 13th Street North
1.3 km · 3 min · West 13th Street North
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10
Arrive at your destination
0 m · 1 sec · West 13th Street North
Car Route Details
A richer read on the saved driving route between Kansas City 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.
Kansas Turnpike
Keep slight left to continue on Kansas Turnpike
132 mi · 02h 12m
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.
Slight Chance Drizzle then Mostly Cloudy leaving Kansas City and Partly Cloudy near Saint Marys.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Kansas City to Saint Marys?
The road trip is about 215.4 miles (346.6 km) and usually takes 03h 53m 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?
Emporia is a useful midpoint, sitting about 107.6 miles from Kansas City and 107.8 miles from Saint Marys.
How much longer is the road route than the straight-line distance?
The direct path is about 189.9 miles (305.6 km), while the road route adds roughly 25.5 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 CST. If you want a more comfortable same-day return, try to leave by 9:14 AM CST.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $29.05 one way or $58.09 round trip. Estimated CO2 is about 67.5 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Drizzle then Mostly Cloudy around Kansas City and Partly Cloudy near Saint Marys.
Stop Ideas Near Emporia
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 Emporia.
Topeka
Lawrence
Newton
Flight Path Map
This map shows the direct air route between Kansas City and Saint Marys. Straight-line distance: 189.88 mi (305.58 km).
#1 Kansas City
The second most populous city in Kansas.
| Population | 152,960 |
| Coordinates | 39.1141700, -94.6274600 |
| Altitude | 266 |
| Country | United States |
#2 Saint Marys
Saint Marys is a place in Kansas, United States.
| Population | 0 |
| Coordinates | 37.7066800, -97.6400500 |
| Altitude | 461 |
| Country | United States |
End: Saint Marys (-97.64005, 37.70668)
Estimated Travel Time
Distance: 347 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 10m |
| 40 mph (64.37 km/h) | 05h 23m |
| 50 mph (80.47 km/h) | 04h 18m |
| 60 mph (96.56 km/h) | 03h 35m |
| 70 mph (112.65 km/h) | 03h 04m |
| 80 mph (129 km/h) | 02h 41m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.82 | $29.05 | $58.09 |
| Mid-grade | $4.19 | $31.84 | $63.67 |
| Premium | $4.55 | $34.61 | $69.22 |
| Diesel | $5.92 | $45.00 | $90.00 |
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 Kansas · Nov 06, 2026