How far is St. Louis, MO from Saint Martins, MO?
The driving distance from St. Louis, MO to Saint Martins, MO is about 141 miles (226.9 km), with a travel time of about 02h 47m by car.
- The straight-line flight distance is about 115.5 miles (185.9 km).
- For a round trip, plan for roughly 05h 34m 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 47m.
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 Montgomery County, Missouri, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny then Chance Showers And Thunderstorms
Slight Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between St. Louis and Saint Martins.
Turn-by-Turn Driving Directions
Step-by-step road directions between St. Louis and Saint Martins.
-
1
Start on Market Street
1.6 mi · 3 min · Market Street
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2
Take the ramp slight left toward I 64 West, US 40 West: Wentzville
1531 ft · 24 sec
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3
Merge slight left onto Jack Buck Memorial Highway
4.3 mi · 6 min · Jack Buck Memorial Highway
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4
Continue on Daniel Boone Expressway
5.7 mi · 7 min · Daniel Boone Expressway
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5
Continue on Avenue of the Saints
27.8 mi · 34 min · Avenue of the Saints
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6
Take the exit slight left toward I 70 West, US 40 West: Kansas City
3047 ft · 1 min
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7
Merge slight left onto Dwight D Eisenhower Highway
61.6 mi · 1 hr 11 min · Dwight D Eisenhower Highway
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8
Take the exit slight right toward US 54: Auxvasse, Mexico, Fulton
1196 ft · 28 sec
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9
Turn left
29.6 mi · 33 min
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10
Take the exit slight right toward US 63 South, US 50
66 m · 5 sec
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11
Keep slight left to continue on US 63 South, US 50
724 ft · 16 sec
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12
Keep slight right to continue on US 50 West: Sedalia
1203 ft · 29 sec
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13
Merge slight left
7.6 mi · 9 min
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14
Take the exit slight right toward MO D, MO T: Saint Martins, Lohman
1862 ft · 46 sec
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15
Turn right onto Lomo Drive
923 ft · 21 sec · Lomo Drive
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16
Turn left onto Business 50 West
1.1 km · 1 min · Business 50 West
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17
Arrive at your destination
0 m · 1 sec · Business 50 West
Car Route Details
A richer read on the saved driving route between St. Louis and Saint Martins.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Dwight D Eisenhower Highway
Merge slight left onto Dwight D Eisenhower Highway
61.6 mi · 01h 11m
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 Sunny then Chance Showers And Thunderstorms leaving St. Louis and Slight Chance Showers And Thunderstorms near Saint Martins.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from St. Louis to Saint Martins?
The road trip is about 141 miles (226.9 km) and usually takes 02h 47m 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?
High Hill is a useful midpoint, sitting about 70.4 miles from St. Louis and 70.6 miles from Saint Martins.
How much longer is the road route than the straight-line distance?
The direct path is about 115.5 miles (185.9 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 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 12:56 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $18.74 one way or $37.48 round trip. Estimated CO2 is about 44.2 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny then Chance Showers And Thunderstorms around St. Louis and Slight Chance Showers And Thunderstorms near Saint Martins.
Stop Ideas Near High Hill
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Warrenton City Animal Control
Warrenton City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to High Hill.
Hermann
Washington
Jefferson City
Kirkwood
Flight Path Map
This map shows the direct air route between St. Louis and Saint Martins. Straight-line distance: 115.52 mi (185.91 km).
#1 St. Louis
The second most populous city in Missouri and the center of the St.
| Population | 315,685 |
| Coordinates | 38.6272700, -90.1978900 |
| Altitude | 142 |
| Country | United States |
#2 Saint Martins
City in Cole County, MO
| Population | 1,204 |
| Coordinates | 38.5942000, -92.3371300 |
| Altitude | 237 |
| Country | United States |
End: Saint Martins (-92.33713, 38.5942)
Estimated Travel Time
Distance: 227 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 41m |
| 40 mph (64.37 km/h) | 03h 31m |
| 50 mph (80.47 km/h) | 02h 49m |
| 60 mph (96.56 km/h) | 02h 20m |
| 70 mph (112.65 km/h) | 02h 00m |
| 80 mph (129 km/h) | 01h 45m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $18.74 | $37.48 |
| Mid-grade | $4.25 | $21.14 | $42.27 |
| Premium | $4.65 | $23.13 | $46.26 |
| Diesel | $5.30 | $26.36 | $52.72 |
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 Missouri · Apr 17, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.