How far is Marthasville, MO from St. Louis, MO?
The driving distance from Marthasville, MO to St. Louis, MO is about 55.1 miles (88.6 km), with a travel time of about 01h 04m by car.
- The straight-line flight distance is about 46.4 miles (74.7 km).
- For a round trip, plan for roughly 02h 09m 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 04m.
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.
Unincorporated community in St.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Marthasville and St. Louis.
Turn-by-Turn Driving Directions
Step-by-step road directions between Marthasville and St. Louis.
-
1
Start on South 2nd Street
38 m · 11 sec · South 2nd Street
-
2
Turn left onto East Main Street
758 ft · 26 sec · East Main Street
-
3
Turn left onto One Street
1966 ft · 57 sec · One Street
-
4
At the end of the road, turn left
6.9 mi · 10 min
-
5
Turn left onto East 5th Street
1.5 km · 2 min · East 5th Street
-
6
Turn right onto International Avenue
2790 ft · 1 min · International Avenue
-
7
Turn left
9.1 mi · 12 min
-
8
Take the ramp left toward I 44 East, US 50 East: Saint Louis
1365 ft · 33 sec
-
9
Merge slight left
28.8 mi · 34 min
-
10
Continue on Police Officer Robert Stanze Memorial Highway
2.7 mi · 3 min · Police Officer Robert Stanze Memorial Highway
-
11
Continue on Officer Michael Barwick Memorial Highway
3.5 mi · 4 min · Officer Michael Barwick Memorial Highway
-
12
Continue on Officer David Haynes Memorial Highway
2.3 mi · 3 min · Officer David Haynes Memorial Highway
-
13
Take the exit slight right toward Jefferson Avenue
924 ft · 22 sec
-
14
Turn left onto South Jefferson Avenue
1.3 mi · 3 min · South Jefferson Avenue
-
15
Turn right onto Market Street
1.6 km · 2 min · Market Street
-
16
Arrive at your destination
0 m · 1 sec · Market Street
Car Route Details
A richer read on the saved driving route between Marthasville and St. Louis.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 44 East
Merge slight left
28.8 mi · 00h 34m
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 leaving Marthasville and Mostly Sunny near St. Louis.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Marthasville to St. Louis?
The road trip is about 55.1 miles (88.6 km) and usually takes 01h 04m 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?
Sherman is a useful midpoint, sitting about 29 miles from Marthasville and 26.1 miles from St. Louis.
How much longer is the road route than the straight-line distance?
The direct path is about 46.4 miles (74.7 km), while the road route adds roughly 8.7 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 4:20 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.32 one way or $14.63 round trip. Estimated CO2 is about 17.2 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Marthasville and Mostly Sunny near St. Louis.
Stop Ideas Near Sherman
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 Sherman.
Kirkwood
Gateway Transportation Center
Washington
Alton
Flight Path Map
This map shows the direct air route between Marthasville and St. Louis. Straight-line distance: 46.4 mi (74.68 km).
#1 Marthasville
City in Missouri
| Population | 1,198 |
| Coordinates | 38.6283800, -91.0576400 |
| Altitude | 171 |
| Country | United States |
#2 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 |
End: Market Street (-90.197859, 38.627348)
Estimated Travel Time
Distance: 89 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 50m |
| 40 mph (64.37 km/h) | 01h 22m |
| 50 mph (80.47 km/h) | 01h 06m |
| 60 mph (96.56 km/h) | 00h 55m |
| 70 mph (112.65 km/h) | 00h 47m |
| 80 mph (129 km/h) | 00h 41m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $7.32 | $14.63 |
| Mid-grade | $4.25 | $8.25 | $16.50 |
| Premium | $4.65 | $9.03 | $18.06 |
| Diesel | $5.30 | $10.29 | $20.58 |
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 30, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.