How far is Detroit, MI from Saint Louis, MI?
The driving distance from Detroit, MI to Saint Louis, MI is about 137.3 miles (221 km), with a travel time of about 02h 34m by car.
- The straight-line flight distance is about 108.6 miles (174.7 km).
- For a round trip, plan for roughly 05h 09m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM EDT.
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 34m.
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.
City in Ingham County, Michigan, United States of America
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 Detroit and Saint Louis.
Turn-by-Turn Driving Directions
Step-by-step road directions between Detroit and Saint Louis.
-
1
Start on Cadillac Square
95 m · 15 sec · Cadillac Square
-
2
Turn right onto Bates Street
75 m · 7 sec · Bates Street
-
3
Turn right onto East Congress Street
649 ft · 38 sec · East Congress Street
-
4
Turn left onto Griswold Street
635 ft · 26 sec · Griswold Street
-
5
Turn right onto West Jefferson Avenue
1638 ft · 31 sec · West Jefferson Avenue
-
6
Continue on John C Lodge Freeway
17.8 mi · 23 min · John C Lodge Freeway
-
7
Take the exit slight left toward I 696 West: Lansing
2310 ft · 56 sec
-
8
Merge slight left onto Walter P Reuther Freeway
8.2 mi · 9 min · Walter P Reuther Freeway
-
9
Merge slight right
17.9 mi · 19 min
-
10
Keep slight left
38.9 mi · 42 min
-
11
Take the exit slight right toward I 496, US 127 North: Downtown Lansing
1.1 km · 1 min
-
12
Merge slight left onto Ransom E Olds Freeway
2.8 mi · 3 min · Ransom E Olds Freeway
-
13
Keep slight right to continue on US 127 North: Clare
47.9 mi · 51 min
-
14
Take the exit slight right toward BUS US 127: St Louis
1.9 mi · 3 min
-
15
Arrive at your destination
0 m · 1 sec · North Main Street
Car Route Details
A richer read on the saved driving route between Detroit and Saint 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.
US 127 North
Keep slight right to continue on US 127 North: Clare
47.9 mi · 00h 51m
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 Detroit and Mostly Sunny near Saint Louis.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Detroit to Saint Louis?
The road trip is about 137.3 miles (221 km) and usually takes 02h 34m 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?
Webberville is a useful midpoint, sitting about 68.6 miles from Detroit and 68.7 miles from Saint Louis.
How much longer is the road route than the straight-line distance?
The direct path is about 108.6 miles (174.7 km), while the road route adds roughly 28.7 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 EDT. If you want a more comfortable same-day return, try to leave by 1:20 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $18.29 one way or $36.58 round trip. Estimated CO2 is about 43.1 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Detroit and Mostly Sunny near Saint Louis.
Stop Ideas Near Webberville
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 Webberville.
East Lansing station
Durand Union Station
Owosso, MI
Jackson station
Flight Path Map
This map shows the direct air route between Detroit and Saint Louis. Straight-line distance: 108.55 mi (174.7 km).
#1 Detroit
The twenty-fourth most populous city in the United States and the center of the Detroit metropolitan area.
| Population | 665,369 |
| Coordinates | 42.3314300, -83.0457500 |
| Altitude | 183 |
| Country | United States |
#2 Saint Louis
City in Michigan, United States
| Population | 7,086 |
| Coordinates | 43.4083600, -84.6066700 |
| Altitude | 223 |
| Country | United States |
End: Saint Louis (-84.60667, 43.40836)
Estimated Travel Time
Distance: 221 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 34m |
| 40 mph (64.37 km/h) | 03h 26m |
| 50 mph (80.47 km/h) | 02h 44m |
| 60 mph (96.56 km/h) | 02h 17m |
| 70 mph (112.65 km/h) | 01h 57m |
| 80 mph (129 km/h) | 01h 42m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $18.29 | $36.58 |
| Mid-grade | $4.25 | $20.63 | $41.25 |
| Premium | $4.65 | $22.57 | $45.14 |
| Diesel | $5.30 | $25.72 | $51.45 |
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 Michigan · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.