How far is Saint Louis, MI from Detroit, MI?
The driving distance from Saint Louis, MI to Detroit, MI is about 137.6 miles (221.4 km), with a travel time of about 02h 01m by car.
- The straight-line flight distance is about 108.6 miles (174.7 km).
- For a round trip, plan for roughly 04h 02m 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 01m.
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.
Driving Route Map
The map below follows the saved road route between Saint Louis and Detroit.
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint Louis and Detroit.
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1
Start on North Main Street
1 mi · 2 min · North Main Street
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2
Continue on North State Road
1.3 km · 1 min · North State Road
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3
Take the ramp slight right toward US 127 SOUTH: Lansing
51.3 mi · 55 min
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4
Take the exit slight left toward I 96 East: Detroit
1.4 km · 2 min
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5
Merge slight right
56.1 mi · 1 hr
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6
Continue on Walter P Reuther Freeway
8.9 mi · 10 min · Walter P Reuther Freeway
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7
Merge slight left onto John C Lodge Freeway
17.8 mi · 23 min · John C Lodge Freeway
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8
Take the exit slight left toward Larned Street, Downtown
1773 ft · 45 sec
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9
Continue on West Larned Street
1024 ft · 34 sec · West Larned Street
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10
Turn left onto Woodward Avenue
868 ft · 42 sec · Woodward Avenue
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11
Turn right onto Cadillac Square
39 m · 4 sec · Cadillac Square
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12
Arrive at your destination
0 m · 1 sec · Cadillac Square
Car Route Details
A richer read on the saved driving route between Saint Louis and Detroit.
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 96 East
Merge slight right
56.1 mi · 01h 00m
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.
Sunny leaving Saint Louis and Sunny near Detroit.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Saint Louis to Detroit?
The road trip is about 137.6 miles (221.4 km) and usually takes 02h 01m 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 68.7 miles from Saint Louis and 68.8 miles from Detroit.
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 29 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 2:28 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $18.33 one way or $36.65 round trip. Estimated CO2 is about 43.2 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Saint Louis and Sunny near Detroit.
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 Saint Louis and Detroit. Straight-line distance: 108.55 mi (174.7 km).
#1 Saint Louis
City in Michigan, United States
| Population | 7,086 |
| Coordinates | 43.4083600, -84.6066700 |
| Altitude | 223 |
| Country | United States |
#2 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 |
End: Cadillac Square (-83.04575, 42.331399)
Estimated Travel Time
Distance: 221 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 35m |
| 40 mph (64.37 km/h) | 03h 26m |
| 50 mph (80.47 km/h) | 02h 45m |
| 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 | $18.33 | $36.65 |
| Mid-grade | $4.25 | $20.67 | $41.34 |
| Premium | $4.65 | $22.62 | $45.24 |
| Diesel | $5.30 | $25.78 | $51.55 |
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.