How far is Ann Arbor, MI from Saint Louis, MI?
The driving distance from Ann Arbor, MI to Saint Louis, MI is about 112.4 miles (180.9 km), with a travel time of about 02h 05m by car.
- The straight-line flight distance is about 89.6 miles (144.2 km).
- For a round trip, plan for roughly 04h 10m 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 05m.
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.
Census-designated place in Ingham County, Michigan
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Ann Arbor and Saint Louis.
Turn-by-Turn Driving Directions
Step-by-step road directions between Ann Arbor and Saint Louis.
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1
Start on South State Street
1325 ft · 43 sec · South State Street
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2
Turn left onto East Huron Street
2058 ft · 1 min · East Huron Street
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3
Turn right onto North Main Street
1.2 mi · 3 min · North Main Street
-
4
Take the ramp straight toward M 14 East, US 23: Flint, Detroit
835 ft · 20 sec
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5
Merge slight left
1.1 mi · 1 min
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6
Keep left to continue on US 23 North: Flint
14.8 mi · 16 min
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7
Take the exit slight left toward I 96 West: Lansing
1893 ft · 42 sec
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8
Keep slight left to continue on I 96 West: Lansing, Brighton, Spencer Road
1555 ft · 24 sec
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9
Keep slight left to continue on I 96 West: Lansing
1463 ft · 22 sec
-
10
Merge slight left
1.2 mi · 1 min
-
11
Keep slight left
38.9 mi · 42 min
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12
Take the exit slight right toward I 496, US 127 North: Downtown Lansing
1.1 km · 1 min
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13
Merge slight left onto Ransom E Olds Freeway
2.8 mi · 3 min · Ransom E Olds Freeway
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14
Keep slight right to continue on US 127 North: Clare
47.9 mi · 51 min
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15
Take the exit slight right toward BUS US 127: St Louis
1.9 mi · 3 min
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16
Arrive at your destination
0 m · 1 sec · North Main Street
Car Route Details
A richer read on the saved driving route between Ann Arbor 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.
Sunny leaving Ann Arbor and Sunny near Saint Louis.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Ann Arbor to Saint Louis?
The road trip is about 112.4 miles (180.9 km) and usually takes 02h 05m 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?
Okemos is a useful midpoint, sitting about 56.2 miles from Ann Arbor and 56.2 miles from Saint Louis.
How much longer is the road route than the straight-line distance?
The direct path is about 89.6 miles (144.2 km), while the road route adds roughly 22.8 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 2:20 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $14.97 one way or $29.94 round trip. Estimated CO2 is about 35.3 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Ann Arbor and Sunny near Saint Louis.
Stop Ideas Near Okemos
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 Okemos.
East Lansing station
Owosso, MI
Durand Union Station
Jackson station
Flight Path Map
This map shows the direct air route between Ann Arbor and Saint Louis. Straight-line distance: 89.6 mi (144.2 km).
#1 Ann Arbor
The most populous city in Washtenaw County, Michigan.
| Population | 119,280 |
| Coordinates | 42.2775600, -83.7408800 |
| Altitude | 269 |
| 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: 181 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 44m |
| 40 mph (64.37 km/h) | 02h 48m |
| 50 mph (80.47 km/h) | 02h 14m |
| 60 mph (96.56 km/h) | 01h 52m |
| 70 mph (112.65 km/h) | 01h 36m |
| 80 mph (129 km/h) | 01h 24m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $14.97 | $29.94 |
| Mid-grade | $4.25 | $16.88 | $33.77 |
| Premium | $4.65 | $18.48 | $36.95 |
| Diesel | $5.30 | $21.06 | $42.11 |
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 · 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.