Origin
Flint, MI
Late night in Flint on Tuesday
Local time
5:14 AM
EDT
Current temp
63°F
Unavailable
Live forecast
Trip from Flint, MI to Saint Louis, MI
Pin this tripCompiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 21, 2026 · Editorial standards
Drive Time
1h 27m
Distance
70.9 mi
114 km
Drive Score
9/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$11
one way
EV Charging
Unknown
Best Time to Leave
4 AM
1h 20m
★
6 AM
1h 27m
8 AM
1h 40m
10 AM
1h 32m
12 PM
1h 30m
3 PM
1h 32m
5 PM
1h 40m
8 PM
1h 23m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Saint Louis, MI
Amicia Short
Trip Overview
This 70.9-mile journey from Flint to Saint Louis, Michigan, is a manageable 1-hour and 27-minute drive, making it an excellent option for a day trip. You'll primarily navigate on I-75, Gratiot Road, and East Monroe Road, with about 47% of the route utilizing highway driving. The estimated fuel cost for this trip is around $11, offering a budget-friendly excursion within the Midwest region. Given its short duration and minimal stops, you can easily complete this drive in a single day, allowing for flexibility in your departure time and schedule.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 75 | 23.4 mi | 25m |
| Gratiot Road | 16.7 mi | 19m |
| East Monroe Road | 10.4 mi | 14m |
| UAW Freeway | 9.7 mi | 10m |
| Sheridan Avenue | 1.9 mi | 2m |
| East Saginaw Street | 1.6 mi | 2m |
| East Holland Avenue | 1.3 mi | 1m |
| Gratiot Avenue | 1.3 mi | 1m |
Longest stretch:
I 75
— 23.4 mi, about 25m
Turn-by-Turn Driving Directions
Step-by-step road directions between Flint, MI and Saint Louis, MI.
1
Start on this road
93 ft
·
11 sec
·
this road
2
Turn uturn onto M 21
253 ft
·
17 sec
·
East Court Street
3
Turn right onto Saginaw Street
0.1 mi
·
28 sec
·
Saginaw Street
4
Turn right onto East Third Street
0.4 mi
·
1 min
·
East Third Street
5
Turn left onto Chavez Drive
483 ft
·
13 sec
·
Chavez Drive
6
Take the ramp
0.2 mi
·
28 sec
Toward I 475 North
7
Merge onto I 475
9.7 mi
·
10 min
·
UAW Freeway
8
Merge onto I 75; US 23
23 mi
·
25 min
·
I 75; US 23
9
Take the exit
0.2 mi
·
44 sec
Exit 149
Toward M 46: Buena Vista, Sandusky
10
Enter roundabout onto M 46
13 ft
·
0 sec
·
East Holland Avenue
11
Continue on M 46
0.2 mi
·
15 sec
·
East Holland Avenue
12
Enter roundabout onto M 46
106 ft
·
5 sec
·
East Holland Avenue
13
Continue on M 46
1.1 mi
·
1 min
·
East Holland Avenue
Use the straight / left lanes.
14
Turn slight right onto M 46
1.1 mi
·
1 min
·
East Remington Street
15
Turn left onto M 46
1.9 mi
·
2 min
·
Sheridan Avenue
16
Continue on M 46
0.4 mi
·
34 sec
·
Williams Street
Use the straight / right lanes.
17
Turn left onto Gratiot Avenue
1.3 mi
·
1 min
·
Gratiot Avenue
Use the left lane.
18
Continue on M 46
11 mi
·
13 min
·
Gratiot Road
19
Continue on M 46
0.6 mi
·
40 sec
·
East Saginaw Street
20
Continue on M 46
0.1 mi
·
9 sec
·
North Saginaw Street
21
Continue on M 46
4.1 mi
·
4 min
·
Gratiot Road
22
Continue on M 46
0.5 mi
·
1 min
·
Saginaw Street
23
Continue on M 46
0.7 mi
·
1 min
·
West Saginaw Street
24
Continue on M 46
1.2 mi
·
1 min
·
Gratiot Road
25
Continue on M 46
5.0 mi
·
7 min
·
East Monroe Road
26
Continue on M 46
1.0 mi
·
2 min
·
East Saginaw Street
27
Continue on M 46
5.4 mi
·
7 min
·
East Monroe Road
28
Continue on M 46
0.6 mi
·
1 min
·
East Washington Street
29
Turn right onto North Main Street
173 ft
·
5 sec
·
North Main Street
30
Arrive at destination
North Main Street
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
35 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 16 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 35.4 miles from Flint, MI, which is a good place for a longer meal and fuel stop.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Heads-up: tricky spots
5 of 135 decision points cluster between mile 0 and 34.4 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
0 mi into trip
|
~0m in
|
M 21 / East Court Street
Turn uturn onto M 21 / East Court Street
Sharp turn - reduce speed on approach
5
0.1 mi into trip
|
~0m in
|
Saginaw Street
Turn right onto Saginaw Street
Navigation decision point
6
33.9 mi into trip
|
~38m in
Take the exit toward M 46: Buena Vista, Sandusky
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Exit 149
Toward M 46: Buena Vista, Sandusky
5
34.1 mi into trip
|
~38m in
|
M 46 / East Holland Avenue
Enter roundabout onto M 46 / East Holland Avenue
Roundabout - know your exit number before entering
5
34.4 mi into trip
|
~39m in
|
M 46 / East Holland Avenue
Enter roundabout onto M 46 / East Holland Avenue
Roundabout - know your exit number before entering
Fuel & Cost
Regular Gas
$11.08 one way
$22.17 round trip
$3.97/gal
25.4 MPG avg
25 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $12.17 | $24.34 |
| premium | $4.89 | $13.64 | $27.29 |
| diesel | $5.61 | $15.65 | $31.31 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$11
Estimated CO2 emission: 24.8 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $7 in charging · 0 stops · 68% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 21.3 | 0 | $7.44 | $3.40 |
| Efficient EV | 17.7 | 0 | $6.20 | $2.84 |
| EV Truck/SUV | 28.4 | 0 | $9.93 | $4.54 |
Gas CO2
25 kg
EV CO2
8 kg (68% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Destination
Saint Louis, MI
Late night in Saint Louis on Tuesday
Local time
5:14 AM
EDT
Current temp
43°F
Unavailable
Live forecast
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
20 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
1h 27m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
What kind of drive is this?
Expect a mixed driving experience on this route, with a substantial portion, nearly half, on the interstate. The longest uninterrupted stretch you'll encounter is 23.4 miles on I-75, providing a good opportunity for consistent speed. As you transition between I-75 and local roads like Gratiot Road and East Monroe Road, the driving pace will likely vary. This blend of highway and local road travel offers a dynamic feel, shifting from efficient travel to a more community-oriented pace.
47% highway, the rest on surface roads — varied driving throughout.
30 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 23.4 mi on I 75.
How Hard Is This Drive?
5/10
This route mixes highway mileage with some local-road sections near the start or finish. You will hit about 13 points where you need to pay attention to lane position or signs. The trickiest moment comes early in the drive near M 21 / East Court Street.
Driving Effort
5/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 70.9 miles you will encounter 13 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: near the start (M 21 / East Court Street): Sharp turn - reduce speed on approach; at 0.1 miles (Saginaw Street): Navigation decision point; at 33.9 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Flint, MI and Saint Louis, MI, road signs point toward M 46: Buena Vista and Sandusky.
M 46: Buena Vista
33.9 mi in
|
~38m
Sandusky
33.9 mi in
|
~38m
About the Cities
Starting in Flint, MI
Full guide →Flint is an industrial city an hour northwest of Detroit in Michigan. It was the home of many General Motors factories, including the Buick World Headquarters, Flint has fallen on hard times over the past 30 years due to the decline of the American automotive industry. Despite these misfortunes, the city has an outsized history, including decisive roles in the growth of the American labor movement and community schooling and evident in a host of extensive and well-endowed cultural institutions. Flint has seen a dramatic reduction in crime while simultaneously enjoying a revitalizing Downtown and growing colleges and universities are found within the city's limits.
City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 1h 27m. Total distance: 70.9 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
1h 27m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (47%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 23.4 miles on I 75. The full list of main roads is in the Roads section above.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
The main spots that need attention: near the start (M 21 / East Court Street): Sharp turn - reduce speed on approach; at 0.1 miles (Saginaw Street): Navigation decision point; at 33.9 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Yes. A round trip is manageable in a single day if you plan a break at Saint Louis, MI before heading back.
How this page is built
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, and EIA for fuel prices. See our methodology for refresh cadence and limitations.
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