This 439.6-mile drive from Flat Rock, MI to Dearborn, MI is a substantial journey, estimated to take around 8 hours and 4 minutes to complete. Given its length, splitting this into two recommended days is a smart approach, allowing for a more relaxed pace. The route is heavily focused on highway travel, with 98% of the journey on major roads, and you can expect a fuel cost of approximately $69. This drive stays within the Midwest region, connecting two points within Michigan. With only two suggested stops, it’s designed for efficient travel rather than leisurely exploration.
Trip Pace
Best split across 2 days
Treat the return leg as its own travel day rather than an afterthought.
Break Rhythm
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
219.8 miles from Flat Rock, MI
A natural place for your longest stop of the day
, about 4h 11m into the drive
.
Main Roads
Road
Distance
Duration
I 75
290.2 mi
5h 1m
US 2
133.2 mi
2h 37m
Edsel Ford Freeway
5.6 mi
7m
County 416 20th Road
3.5 mi
4m
County 420 21st Road
3 mi
4m
County 426 M.5 Road
1 mi
1m
Michigan Avenue
0.8 mi
1m
South Hill Road
0.7 mi
1m
Longest stretch:
I 75
— 290.2 mi, about 5h 1m
Traffic on I-75
Hour-of-day weekday pattern from 61 FHWA count stations on your route.
Peak
4 PM
~2,487 veh/hr typical
· worst 3,524
Quietest
2 AM
~131 veh/hr
Peak-to-quiet ratio
19×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 52 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Flat Rock, MI and Dearborn, MI.
1
Start on 20th Road
117 ft·5 sec·20th Road
2
Continue on 416
3.5 mi·4 min·County 416 20th Road
3
At end of road, turn left onto 426
1.0 mi·1 min·County 426 M.5 Road
4
Turn right onto 420
3.0 mi·4 min·County 420 21st Road
5
Continue on South Hill Road
0.6 mi·1 min·South Hill Road
6
Continue on Blackwell Avenue
0.2 mi·35 sec·Blackwell Avenue
7
Continue on South Hill Road
457 ft·21 sec·South Hill Road
8
Turn left onto US 2; US 41; M 35
133 mi·2 hr 37 min·US 2; US 41; M 35
9
Take the exit
0.3 mi·44 sec
Toward I 75 South: Mackinac Bridge
10
Merge onto I 75
94 mi·1 hr 37 min·I 75
11
Keep slight left at fork onto I 75
124 mi·2 hr 7 min·I 75
Toward I 75: Saginaw, Detroit
12
Keep slight left at fork onto I 75; US 23
11 mi·11 min·I 75; US 23
13
Keep slight left at fork onto I 75
61 mi·1 hr 5 min·I 75
Use the straight / slight right lanes.
14
Take the exit
0.3 mi·36 sec
Exit 53BToward I 94: Port Huron, ChicagoUse the slight right lane.
15
Keep slight right at fork
0.3 mi·43 sec
Toward I 94 West: ChicagoUse the slight right lane.
16
Merge onto I 94
5.6 mi·7 min·Edsel Ford Freeway
Use the straight / slight right lanes.
17
Take the exit
0.4 mi·56 sec
Exit 210AToward US 12: Michigan Avenue, DearbornUse the straight / slight right lanes.
18
At end of road, turn right onto US 12
0.8 mi·1 min·Michigan Avenue
Use the right lane.
19
Arrive at destination
US 12
Trip Plan
For this 8-hour drive, consider an early morning departure to maximize daylight and avoid potential rush hour traffic as you approach Dearborn. Splitting the 439.6-mile journey over two days is advisable, with the longest stretch of 290.2 miles on I-75 being a good candidate for a single day's travel. Budget around $69 for fuel. Plan your two stops strategically, perhaps mid-morning and late afternoon, to break up the driving and stay refreshed. Keep an eye on your fuel gauge, especially before embarking on the longest segment on I-75.
Morning Departure
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Evening Departure
This is a long drive — plan for a morning departure or consider splitting it into two days.
This drive is better paced as a 2-day trip.
Plan roughly 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 219.8 miles from Flat Rock, MI, or about 4h 11m into the drive.
The longest continuous stretch on this route runs about 290.2 miles.
Consider an overnight stop or starting very early.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 97 miles or 1h 57m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 219.8 miles or 4h 11m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Overnight split
Day 1 wrap after about 219.8 miles or 4h 11m
Stop before fatigue turns the last few hours into a grind. You want day two to start fresh, not just resumed.
Final approach
Final hour starts around 6h 56m
Traffic, exits, and arrival timing usually matter more near Dearborn, MI than in the middle of the route.
Before You Leave
+
Open the route before leaving Flat Rock, MI so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
+
Pick one backup stop option before the midpoint in case traffic changes your pacing.
+
Treat this as a 2-day road trip and book the overnight stop before the busiest arrival window.
Day 1
Settle into the route from Flat Rock, MI
Aim for roughly 220 miles and 4 hours of wheel time on this day.
Day 2
Finish the approach into Dearborn, MI
Aim for roughly 220 miles and 4 hours of wheel time on this day.
Your first comfortable stop window is around 97 miles from Flat Rock, MI.
This route usually feels better as a 2-day drive than as one long push.
Plan about 2 real breaks rather than only quick fuel stops.
The longest stretch is on I 75 for about 290.2 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 13
5 decision points cluster between mile 236.2 and 438.4 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
236.2 mi into trip|~4h 28m in|I 75
Keep slight left at fork onto I 75 toward I 75: Saginaw, Detroit
Highway fork - watch signs carefully. Multiple destination signs - pick the right one
Toward I 75: Saginaw, Detroit
6
371.3 mi into trip|~6h 47m in|I 75
Keep slight left at fork onto I 75
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
8
432.2 mi into trip|~7h 52m in
Take the exit toward I 94: Port Huron, Chicago
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 53B
Toward I 94: Port Huron, Chicago
8
432.5 mi into trip|~7h 53m in
Keep slight right at fork toward I 94 West: Chicago
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
Toward I 94 West: Chicago
8
438.4 mi into trip|~8h 1m in
Take the exit toward US 12: Michigan Avenue, Dearborn
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 210A
Toward US 12: Michigan Avenue, Dearborn
Fuel & Cost
Regular Gas
$64.92 one way
$129.84 round trip
$3.75/gal25.4 MPG avg154 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.14
$71.67
$143.34
premium
$4.72
$81.62
$163.24
diesel
$4.80
$83.00
$166.01
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$65
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$195–$305
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 153.8 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $46 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
131.9
1
$46.16
$21.10
Efficient EV
109.9
1
$38.47
$17.58
EV Truck/SUV
175.8
2
$61.54
$28.13
Gas CO2
154 kg
EV CO2
51 kg (67% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
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.
Forecast as of Jul 17, 2026
Origin
Flat Rock, MI
Late night
in Flat Rock on Sunday
Local time
4:20 AM
EDT
Current temp
60°F
Smoke
NE 0 to 5 mph2% chanceLive forecast
Destination
Dearborn, MI
Late night
in Dearborn on Sunday
Local time
4:20 AM
EDT
Current temp
70°F
Smoke
E 2 to 7 mph0% chanceLive forecast
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
For long drives, weather on day two can matter just as much as conditions at departure, so check the whole travel window rather than only the first day.
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
10 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
8h 4m on the road
This is long enough that the arrival forecast matters almost as much as departure conditions. Recheck both ends before you roll.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
More Details
What kind of drive is this?
Expect a highway-focused drive for the vast majority of this trip, with 98% of the 439.6 miles utilizing major roadways. The primary arteries include I-75 and US-2, leading into the Edsel Ford Freeway. The longest uninterrupted stretch is a significant 290.2 miles on I-75, so be prepared for extended periods of consistent highway speeds. This profile suggests a drive characterized by efficient travel rather than winding backroads or frequent scenic detours.
98% highway — fuel and pacing are the main things to plan.
19 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 290.2 mi on I 75.
How Hard Is This Drive?
9/10
This is a straightforward highway drive that stays mostly on I 75 and US 2. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 236.2 miles in near I 75.
Driving Effort9/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 13 significant decision points across 439.6 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 236.2 miles (I 75): Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 371.3 miles (I 75): Highway fork - watch signs carefully. Lane positioning matters here; at 432.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Elevation Profile
Gently rolling terrain
1,359 ft591 ft
Total Climb
1,108 ft
Total Descent
1,287 ft
Highest Point
1,359 ft
~219.8 mi in
Elevation Range
767 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Flat Rock, MI to Dearborn, MI, road signs begin pointing toward Detroit along the way.
Detroit
236.2 mi in|~4h 28m|via I 75
Detours Along the Way
Tagged by where each one fits in your drive — first break, midpoint, final stretch.
The longest stretch is about 290.2 miles on I 75. The full list of main roads is in the Roads section above.
Yes — a 2-day pace is more comfortable than one long haul. A sensible stopping point is after roughly 220 miles on day one.
Yes — we found about 33 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Dearborn, MI before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 2 meaningful breaks. There are 33 rest areas along the route for bathroom stops.
The main spots that need attention: at 236.2 miles (I 75): Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 371.3 miles (I 75): Highway fork - watch signs carefully. Lane positioning matters here; at 432.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Not recommended in a single day. At 8.1 hours each way, a round trip means 16.1 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Dearborn, MI before the return drive.
