Planning a trip from Boston, MI to Flint, MI? This journey covers 495.5 miles and will take approximately 9 hours and 36 minutes of driving time. With a projected fuel cost of around $75, it's a manageable drive, though it's best spread over two days to avoid fatigue. The route primarily utilizes I-75, Townsend Drive, and M-28, offering a highway-focused experience through the Midwest. While it's a significant distance, breaking it up allows for a more relaxed pace and enjoyment of the drive.
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
247.8 miles from Boston, MI
A natural place for your longest stop of the day
, about 5h 17m into the drive
.
Main Roads
Road
Distance
Duration
I 75
218.3 mi
3h 44m
Townsend Drive
84 mi
1h 47m
M-28
70.9 mi
1h 24m
US 2
65.1 mi
1h 15m
M 77
17.3 mi
20m
Palms Avenue
10.2 mi
14m
UAW Freeway
10 mi
10m
US-41/M-28
3.8 mi
5m
Longest stretch:
I 75
— 218.3 mi, about 3h 44m
Traffic on I-75
Hour-of-day weekday pattern from 30 FHWA count stations on your route.
Peak
3 PM
~1,426 veh/hr typical
· worst 2,474
Quietest
2 AM
~59 veh/hr
Peak-to-quiet ratio
24.2×
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 Boston, MI and Flint, MI.
1
Start on Boston Road
0.6 mi·1 min·Boston Road
2
Continue on Highway Road
1.5 mi·3 min·Highway Road
3
Merge onto US 41
2.2 mi·3 min·US-41
4
Continue on US 41
0.4 mi·51 sec·North Lincoln Drive
5
Turn left onto Scott Street
0.3 mi·1 min·Scott Street
6
At end of road, turn left onto US 41
0.6 mi·1 min·Hancock Street
Use the straight / right lanes.
7
Merge onto US 41
0.2 mi·26 sec·Front Street
Use the straight / slight right lanes.
8
Continue on US 41; M 26
0.3 mi·1 min·Houghton-Hancock Lift Bridge
9
Turn left onto US 41
276 ft·8 sec·US 41 South
Toward US 41 South: Marquette
10
Continue on US 41
0.6 mi·1 min·West Montezuma Avenue
Use the straight lane.
11
Merge onto US 41
0.4 mi·1 min·College Avenue
12
Continue on US 41
84 mi·1 hr 47 min·Townsend Drive
Use the left / straight lanes.
13
Enter roundabout onto US 41; M 28
92 ft·5 sec·US 41; M 28
14
Continue on US 41; M 28
0.9 mi·1 min·US 41; M 28
15
Enter roundabout onto US 41; M 28
94 ft·5 sec·Palms Avenue
16
Continue on US 41; M 28
10 mi·14 min·Palms Avenue
17
Enter roundabout onto US 41; M 28
116 ft·6 sec·US-41/M-28
18
Continue on US 41; M 28
0.5 mi·45 sec·US-41/M-28
19
Enter roundabout onto US 41; M 28
103 ft·6 sec·US-41/M-28
20
Continue on US 41; M 28
1.6 mi·2 min·US-41/M-28
21
Continue on US 41; M 28
1.0 mi·1 min·Marquette Bypass
22
Enter roundabout onto US 41; M 28
109 ft·6 sec·Marquette Bypass
23
Continue on US 41; M 28
0.2 mi·14 sec·Marquette Bypass
24
Enter roundabout onto US 41; M 28
107 ft·1 sec·Marquette Bypass
25
Continue on US 41; M 28
0.5 mi·52 sec·Marquette Bypass
26
Take the exit onto US 41; M 28
410 ft·10 sec·US 41; M 28
27
Merge onto US 41; M 28
2.6 mi·4 min·South Front Street
28
Continue on US 41; M 28
1.6 mi·2 min·US-41/M-28
29
Turn left onto M 28
36 mi·42 min·M-28
30
Continue on M 28
2.2 mi·4 min·West Munising Avenue
31
Continue on M 28
0.2 mi·22 sec·Cedar Street
32
Continue on M 28
35 mi·41 min·M-28
33
Turn sharp right onto M 77
17 mi·20 min·M 77
34
At end of road, turn left onto US 2
65 mi·1 hr 15 min·US 2
35
Take the exit
0.3 mi·44 sec
Toward I 75 South: Mackinac Bridge
36
Merge onto I 75
94 mi·1 hr 37 min·I 75
37
Keep slight left at fork onto I 75
124 mi·2 hr 7 min·I 75
Toward I 75: Saginaw, Detroit
38
Keep slight right at fork onto I 475
10.0 mi·10 min·UAW Freeway
Exit 125Toward I 475: Downtown Flint
39
Take the exit
0.2 mi·31 sec
Exit 7Toward M 21
40
Continue on Chavez Drive
0.2 mi·34 sec·Chavez Drive
41
Turn right onto M 21
0.2 mi·31 sec·East Court Street
Use the right lane.
42
Turn left
68 ft·6 sec
43
Turn right
93 ft·6 sec
44
Arrive at destination
Trip Plan
For this 9.5-hour drive, consider an early morning departure to maximize daylight, especially if splitting the trip over two days. With two recommended stops, plan to break up the 495.5 miles to stay refreshed. The longest stretch on I-75 is over 200 miles, so ensure you have fuel and amenities accounted for before entering that segment. A good pacing strategy would be to drive roughly half the distance on day one, finding a convenient stopping point before continuing to Flint on day two.
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 247.8 miles from Boston, MI, or about 5h 17m into the drive.
The longest continuous stretch on this route runs about 218.3 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 109 miles or 2h 30m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 247.8 miles or 5h 17m 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 247.8 miles or 5h 17m
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 8h 33m
Traffic, exits, and arrival timing usually matter more near Flint, MI than in the middle of the route.
Before You Leave
+
Open the route before leaving Boston, 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 Boston, MI
Aim for roughly 248 miles and 4.8 hours of wheel time on this day.
Day 2
Finish the approach into Flint, MI
Aim for roughly 248 miles and 4.8 hours of wheel time on this day.
Your first comfortable stop window is around 109 miles from Boston, 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 218.3 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 25
5 decision points cluster between mile 5 and 495.3 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
5 mi into trip|~10m in|US 41 / Hancock Street
At end of road, turn left onto US 41 / Hancock Street
Lane positioning matters here
Use the straight / right lanes.
5
5.6 mi into trip|~12m in|US 41 / Front Street
Merge onto US 41 / Front Street
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
6
360.6 mi into trip|~7h 16m 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
484.8 mi into trip|~9h 23m in|I 475 / UAW Freeway
Keep slight right at fork onto I 475 / UAW Freeway toward I 475: Downtown Flint
Highway fork - watch signs carefully
Exit 125
Toward I 475: Downtown Flint
6
495.3 mi into trip|~9h 35m in|M 21 / East Court Street
Turn right onto M 21 / East Court Street
Lane positioning matters here
Use the right lane.
Fuel & Cost
Regular Gas
$73.17 one way
$146.35 round trip
$3.75/gal25.4 MPG avg173 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.14
$80.78
$161.56
premium
$4.72
$92.00
$184.00
diesel
$4.80
$93.56
$187.12
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$73
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$203–$313
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 173.4 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $52 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
148.7
1
$52.03
$23.78
Efficient EV
123.9
1
$43.36
$19.82
EV Truck/SUV
198.2
2
$69.37
$31.71
Gas CO2
173 kg
EV CO2
58 kg (66% 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 16, 2026
Origin
Boston, MI
Late night
in Boston on Sunday
Local time
4:51 AM
EDT
Current temp
61°F
Smoke
E 5 to 10 mph26% chanceLive forecast
Destination
Flint, MI
Late night
in Flint on Sunday
Local time
4:51 AM
EDT
Current temp
65°F
Smoke
E 3 mph0% chanceLive forecast
80°F
Laketon, MI
248 mi in
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
4 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
9h 36m 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.
National Parks Near This Route
Worth a detour if your schedule allows.
Keweenaw National Historical Park
National Historical Park
The stories of people and copper in the Keweenaw Peninsula have been intertwined for more than 7,000 years. Indigenous peoples made copper into tools and trade items. Investors and immigrants arrived...
Sandstone cliffs, beaches, waterfalls, sand dunes, inland lakes, deep forest, and wild shoreline beckon you to visit Pictured Rocks National Lakeshore. The power of Lake Superior shapes the park's coa...
16 mi from route
~39 min detour
$25
near mile 170.9
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This drive is predominantly a highway-focused experience, with 61% of the journey on faster roads. You'll encounter the longest uninterrupted stretch of 218.3 miles on I-75, so be prepared for extended periods of consistent speed. While the majority is highway, the inclusion of Townsend Drive and M-28 suggests a transition between different road types, potentially offering a slight change in scenery and pace as you progress toward Flint. Expect a steady drive with minimal complex navigation.
61% highway — fuel and pacing are the main things to plan.
44 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 218.3 mi on I 75.
How Hard Is This Drive?
8/10
This is a straightforward highway drive that stays mostly on I 75 and Townsend Drive. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 5 miles in near US 41 / Hancock Street.
Driving Effort8/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 25 significant decision points across 495.5 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 5 miles (US 41 / Hancock Street): Lane positioning matters here; at 5.6 miles (US 41 / Front Street): Merge point - match speed before joining. Lane positioning matters here; at 360.6 miles (I 75): Highway fork - watch signs carefully. Multiple destination signs - pick the right one.
Elevation Profile
Gently rolling terrain
1,573 ft600 ft
Total Climb
1,977 ft
Total Descent
2,321 ft
Highest Point
1,573 ft
~70.8 mi in
Elevation Range
973 ft
Notable High Points
1,573 ft at ~70.8 miles+925 ft prominence
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 Boston, MI to Flint, MI, road signs begin pointing toward Detroit along the way.
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.
Top landmarks
•Flint Institute of Arts — art school and museum in Flint, Michigan
•Capitol Theatre — movie theater and concert venue in Flint, Michigan, United States
•Robert J. Whaley House — historic house museum in Flint, Michigan
The longest stretch is about 218.3 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 248 miles on day one.
Yes — we found about 32 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 Flint, 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 32 rest areas along the route for bathroom stops.
The main spots that need attention: at 5 miles (US 41 / Hancock Street): Lane positioning matters here; at 5.6 miles (US 41 / Front Street): Merge point - match speed before joining. Lane positioning matters here; at 360.6 miles (I 75): Highway fork - watch signs carefully. Multiple destination signs - pick the right one.
Yes — Keweenaw National Historical Park and Pictured Rocks National Lakeshore. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 9.6 hours each way, a round trip means 19.2 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Flint, MI before the return drive.
