How far is Flat Rock, MI from Detroit, MI?
The driving distance from Flat Rock, MI to Detroit, MI is about 436.6 miles (702.7 km), with a travel time of about 06h 41m by car.
- The straight-line flight distance is about 316.9 miles (510 km).
- For a round trip, plan for roughly 13h 22m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM EDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
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 06h 41m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Township in Crawford County, Michigan
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Flat Rock and Detroit.
Turn-by-Turn Driving Directions
Step-by-step road directions between Flat Rock and Detroit.
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1
Start on 20th Road
36 m · 5 sec · 20th Road
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2
Continue on County 416 20th Road
3.5 mi · 5 min · County 416 20th Road
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3
At the end of the road, turn left onto County 426 M.5 Road
1 mi · 1 min · County 426 M.5 Road
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4
Turn right onto County 420 21st Road
3 mi · 4 min · County 420 21st Road
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5
Continue on South Hill Road
1 km · 2 min · South Hill Road
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6
Continue on Blackwell Avenue
1279 ft · 35 sec · Blackwell Avenue
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7
Continue on South Hill Road
139 m · 22 sec · South Hill Road
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8
Turn left
133.2 mi · 2 hr 37 min
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9
Take the exit slight right toward I 75 South: Mackinac Bridge
1819 ft · 44 sec
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10
Merge slight left
94.1 mi · 1 hr 37 min
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11
Keep slight left to continue on I 75: Saginaw, Detroit
124.2 mi · 2 hr 7 min
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12
Keep slight left
11 mi · 12 min
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13
Keep slight left
63 mi · 1 hr 8 min
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14
Keep slight left to continue on Walter P. Chrysler Freeway
2456 ft · 38 sec · Walter P. Chrysler Freeway
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15
Take the exit slight right toward Lafayette Avenue
1093 ft · 27 sec
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16
Turn slight right onto Macomb Street
1196 ft · 40 sec · Macomb Street
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17
Turn left onto Beaubien Street
636 ft · 23 sec · Beaubien Street
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18
Turn right onto East Lafayette Street
674 ft · 21 sec · East Lafayette Street
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19
Continue on Bates Street
909 ft · 26 sec · Bates Street
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20
At the end of the road, turn right onto East Congress Street
99 m · 17 sec · East Congress Street
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21
Turn right onto Woodward Avenue
137 m · 19 sec · Woodward Avenue
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22
Turn right onto Cadillac Square
39 m · 4 sec · Cadillac Square
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23
Arrive at your destination
0 m · 1 sec · Cadillac Square
Car Route Details
A richer read on the saved driving route between Flat Rock and Detroit.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Longest stretch
Turn left
133 mi · 02h 37m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Partly Sunny leaving Flat Rock and Mostly Sunny near Detroit.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Flat Rock to Detroit?
The road trip is about 436.6 miles (702.7 km) and usually takes 06h 41m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Frederic is a useful midpoint, sitting about 217.7 miles from Flat Rock and 218.9 miles from Detroit.
How much longer is the road route than the straight-line distance?
The direct path is about 316.9 miles (510 km), while the road route adds roughly 119.7 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 6:00 AM to 7:30 AM EDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $58.11 one way or $116.22 round trip. Estimated CO2 is about 136.9 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Flat Rock and Mostly Sunny near Detroit.
Stop Ideas Near Frederic
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 Frederic.
Boyne City, Michigan
Walloon Lake, Michigan
Kingsley, Michigan
Manton, Michigan
Flight Path Map
This map shows the direct air route between Flat Rock and Detroit. Straight-line distance: 316.88 mi (509.97 km).
#1 Flat Rock
City in Michigan, United States
| Population | 9,959 |
| Coordinates | 45.8258000, -87.1834700 |
| Altitude | 234 |
| 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: 703 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 14h 32m |
| 40 mph (64.37 km/h) | 10h 54m |
| 50 mph (80.47 km/h) | 08h 43m |
| 60 mph (96.56 km/h) | 07h 16m |
| 70 mph (112.65 km/h) | 06h 14m |
| 80 mph (129 km/h) | 05h 26m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $58.11 | $116.22 |
| Mid-grade | $4.25 | $65.54 | $131.08 |
| Premium | $4.65 | $71.72 | $143.44 |
| Diesel | $5.30 | $81.73 | $163.47 |
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.