How far is Saint Marys, KS from Kansas City, KS?
The driving distance from Saint Marys, KS to Kansas City, KS is about 87.4 miles (140.7 km), with a travel time of about 01h 27m by car.
- The straight-line flight distance is about 77.5 miles (124.8 km).
- For a round trip, plan for roughly 02h 54m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM CDT.
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 27m.
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.
Township in Douglas County, Kansas
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy then Slight Chance Showers And Thunderstorms
Partly Sunny
Driving Route Map
The map below follows the saved road route between Saint Marys and Kansas City.
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint Marys and Kansas City.
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1
Start on North 6th Street
7 m · 6 sec · North 6th Street
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2
Turn left onto West Bertrand Avenue
12.9 mi · 18 min · West Bertrand Avenue
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3
Continue on West Railroad Street
1079 ft · 46 sec · West Railroad Street
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4
Continue on South Chestnut Street
7.4 mi · 10 min · South Chestnut Street
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5
Take the exit slight right
2111 ft · 52 sec
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6
Merge slight left
1.2 mi · 1 min
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7
Keep slight left to continue on I 70 East, US 40 East, KS 4 East: Kansas City, Gage Boulevard
1621 ft · 36 sec
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8
Keep slight left to continue on I-70 East, Kansas City
1046 ft · 25 sec
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9
Merge slight left onto Truman/Eisenhower Presidential Highway
7.3 mi · 9 min · Truman/Eisenhower Presidential Highway
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10
Keep slight left to continue on Truman/Eisenhower Presidential Highway
1.2 km · 52 sec · Truman/Eisenhower Presidential Highway
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11
Continue on Kansas Turnpike
54.7 mi · 56 min · Kansas Turnpike
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12
Keep slight right to continue on I 70 East, US 24 East, US 40 East, US 69 North: Saint Louis
1600 ft · 25 sec
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13
Take the exit slight right toward US 69 North, US 169 South
943 ft · 21 sec
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14
Turn left onto South 7th Street Trafficway
1.5 mi · 4 min · South 7th Street Trafficway
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15
Turn left onto Armstrong Avenue
86 m · 18 sec · Armstrong Avenue
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16
Turn left
45 m · 11 sec
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17
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Saint Marys and Kansas City.
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
Continue on Kansas Turnpike
54.7 mi · 00h 56m
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.
Mostly Cloudy then Slight Chance Showers And Thunderstorms leaving Saint Marys and Partly Sunny near Kansas City.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Saint Marys to Kansas City?
The road trip is about 87.4 miles (140.7 km) and usually takes 01h 27m 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?
Kanwaka is a useful midpoint, sitting about 43.7 miles from Saint Marys and 43.7 miles from Kansas City.
How much longer is the road route than the straight-line distance?
The direct path is about 77.5 miles (124.8 km), while the road route adds roughly 9.9 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 CDT. If you want a more comfortable same-day return, try to leave by 3:36 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $11.65 one way or $23.30 round trip. Estimated CO2 is about 27.5 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy then Slight Chance Showers And Thunderstorms around Saint Marys and Partly Sunny near Kansas City.
Stop Ideas Near Kanwaka
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 Kanwaka.
Lawrence
Topeka
Union Station
Independence
Flight Path Map
This map shows the direct air route between Saint Marys and Kansas City. Straight-line distance: 77.55 mi (124.8 km).
#1 Saint Marys
City in Pottawatomie and Wabaunsee couties in Kansas, United States
| Population | 2,652 |
| Coordinates | 39.1941600, -96.0711000 |
| Altitude | 291 |
| Country | United States |
#2 Kansas City
The second most populous city in Kansas.
| Population | 152,960 |
| Coordinates | 39.1141700, -94.6274600 |
| Altitude | 266 |
| Country | United States |
End: Armstrong Avenue (-94.627458, 39.114578)
Estimated Travel Time
Distance: 141 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 54m |
| 40 mph (64.37 km/h) | 02h 11m |
| 50 mph (80.47 km/h) | 01h 44m |
| 60 mph (96.56 km/h) | 01h 27m |
| 70 mph (112.65 km/h) | 01h 14m |
| 80 mph (129 km/h) | 01h 05m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $11.65 | $23.30 |
| Mid-grade | $4.25 | $13.14 | $26.28 |
| Premium | $4.65 | $14.38 | $28.76 |
| Diesel | $5.30 | $16.39 | $32.78 |
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 · Jun 03, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.