How far is Saint Marys, KS from Derby, KS?
The driving distance from Saint Marys, KS to Derby, KS is about 167.8 miles (270 km), with a travel time of about 02h 32m by car.
- The straight-line flight distance is about 131.1 miles (211 km).
- For a round trip, plan for roughly 05h 05m 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 02h 32m.
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.
Human settlement in United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy then Slight Chance Showers And Thunderstorms
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Saint Marys and Derby.
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint Marys and Derby.
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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
7.6 mi · 11 min · West Bertrand Avenue
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3
Turn right onto Main Street
1389 ft · 38 sec · Main Street
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4
Continue on Northwest Rossville Road
3178 ft · 1 min · Northwest Rossville Road
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5
Continue on Northwest 42nd Terrace
1407 ft · 39 sec · Northwest 42nd Terrace
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6
Continue on Northwest Carlson Road
1.5 mi · 4 min · Northwest Carlson Road
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7
Continue on Wabaunsee Street
1 km · 2 min · Wabaunsee Street
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8
Continue on Northwest Carlson Road
2.4 mi · 4 min · Northwest Carlson Road
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9
Take the ramp left
1065 ft · 26 sec
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10
Merge slight left onto Truman/Eisenhower Presidential Highway
3.5 mi · 4 min · Truman/Eisenhower Presidential Highway
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11
Continue on Dwight D. Eisenhower Highway
1.1 mi · 1 min · Dwight D. Eisenhower Highway
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12
Continue on Truman/Eisenhower Presidential Highway
4.3 mi · 5 min · Truman/Eisenhower Presidential Highway
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13
Take the exit slight right toward I 470 South, US 75 South
5.6 mi · 7 min
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14
Keep slight left to continue on Dr. Martin Luther King Jr. Memorial Highway
1.2 mi · 2 min · Dr. Martin Luther King Jr. Memorial Highway
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15
Keep slight right to continue on I-335 South: Emporia, Wichita
1161 ft · 28 sec
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16
Merge slight left onto Kansas Turnpike
132 mi · 2 hr 12 min · Kansas Turnpike
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17
Take the exit slight right toward KS 15: Wichita K-15
2608 ft · 1 min
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18
Keep slight left
45 m · 4 sec
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19
Turn right onto Turnpike Drive
1143 ft · 19 sec · Turnpike Drive
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20
At the end of the road, turn left onto South Southeast Boulevard
5.1 mi · 8 min · South Southeast Boulevard
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21
Continue on North Baltimore Avenue
2237 ft · 45 sec · North Baltimore Avenue
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22
Turn left onto East Main Street
83 m · 17 sec · East Main Street
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23
Turn left
37 m · 9 sec
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24
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Saint Marys and Derby.
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
Merge slight left onto Kansas Turnpike
132 mi · 02h 12m
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 Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms near Derby.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Saint Marys to Derby?
The road trip is about 167.8 miles (270 km) and usually takes 02h 32m 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?
Plymouth is a useful midpoint, sitting about 83.8 miles from Saint Marys and 83.9 miles from Derby.
How much longer is the road route than the straight-line distance?
The direct path is about 131.1 miles (211 km), while the road route adds roughly 36.7 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 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 1:24 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $22.32 one way or $44.65 round trip. Estimated CO2 is about 52.6 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 Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms near Derby.
Stop Ideas Near Plymouth
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 Plymouth.
Topeka
Newton
Lawrence
Flight Path Map
This map shows the direct air route between Saint Marys and Derby. Straight-line distance: 131.09 mi (210.97 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 Derby
City in Sedgwick County, Kansas, United States
| Population | 25,145 |
| Coordinates | 37.5455700, -97.2689300 |
| Altitude | 394 |
| Country | United States |
End: North Georgie (-97.268759, 37.545571)
Estimated Travel Time
Distance: 270 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 35m |
| 40 mph (64.37 km/h) | 04h 11m |
| 50 mph (80.47 km/h) | 03h 21m |
| 60 mph (96.56 km/h) | 02h 47m |
| 70 mph (112.65 km/h) | 02h 23m |
| 80 mph (129 km/h) | 02h 05m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $22.32 | $44.65 |
| Mid-grade | $4.25 | $25.18 | $50.36 |
| Premium | $4.65 | $27.55 | $55.10 |
| Diesel | $5.30 | $31.40 | $62.80 |
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.