How far is Cohasset, MA from Boston, MA?
The driving distance from Cohasset, MA to Boston, MA is about 27.4 miles (44.1 km), with a travel time of about 00h 42m by car.
- The straight-line flight distance is about 15.3 miles (24.7 km).
- For a round trip, plan for roughly 01h 25m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM EDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 00h 42m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
A city in Norfolk County, Massachusetts.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Partly Sunny
Driving Route Map
The map below follows the saved road route between Cohasset and Boston.
Turn-by-Turn Driving Directions
Step-by-step road directions between Cohasset and Boston.
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1
Start on North Main Street
1.5 mi · 3 min · North Main Street
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2
Turn left onto King Street
1309 ft · 30 sec · King Street
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3
Turn right onto Chief Justice Cushing Highway
1.3 km · 1 min · Chief Justice Cushing Highway
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4
Continue on Justice Cushing Way
1.9 mi · 3 min · Justice Cushing Way
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5
Enter the roundabout and take exit 2 toward Rotary Circle
108 m · 6 sec · Summer Street
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6
Exit the rotary onto Summer Street
861 ft · 17 sec · Summer Street
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7
Continue on Otis Street
3070 ft · 1 min · Otis Street
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8
Continue on Broad Cove Road
3134 ft · 55 sec · Broad Cove Road
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9
Continue on Lincoln Street
1.5 mi · 2 min · Lincoln Street
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10
Continue on Bridge Street
1.7 mi · 3 min · Bridge Street
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11
Continue on Fore River Bridge
1768 ft · 2 min · Fore River Bridge
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12
Continue on Washington Street
142 m · 8 sec · Washington Street
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13
Enter the roundabout and take exit 1 toward Washington Street
58 m · 3 sec · Washington Street
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14
Exit the roundabout onto Washington Street
1.6 mi · 3 min · Washington Street
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15
Continue on Hancock Street
1335 ft · 34 sec · Hancock Street
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16
Keep slight left to continue on Adams Street
1385 ft · 43 sec · Adams Street
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17
Turn right onto Newport Avenue
2.3 mi · 5 min · Newport Avenue
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18
Turn slight left onto Hancock Street
1349 ft · 33 sec · Hancock Street
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19
Continue on Neponset Avenue
1144 ft · 20 sec · Neponset Avenue
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20
Merge slight left onto William T. Morrissey Boulevard
75 m · 6 sec · William T. Morrissey Boulevard
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21
Take the exit straight toward I 93 North, US 1 North: Boston
1426 ft · 35 sec
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22
Merge slight left onto Southeast Expressway
3.3 mi · 4 min · Southeast Expressway
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23
Continue on John F. Fitzgerald Expressway
998 ft · 19 sec · John F. Fitzgerald Expressway
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24
Take the exit slight left toward South Station, Airport
2666 ft · 1 min
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25
Keep slight right to continue on South Station
2711 ft · 1 min
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26
Continue on Lincoln Street
1345 ft · 53 sec · Lincoln Street
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27
At the end of the road, turn left onto Summer Street
25 m · 4 sec · Summer Street
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28
Turn right onto Devonshire Street
687 ft · 32 sec · Devonshire Street
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29
Turn left onto Franklin Street
53 m · 8 sec · Franklin Street
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30
Turn right onto Arch Street
141 m · 20 sec · Arch Street
-
31
Turn left onto Milk Street
84 m · 11 sec · Milk Street
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32
Continue on Washington Street
737 ft · 33 sec · Washington Street
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33
At the end of the road, turn left onto Court Street
144 m · 20 sec · Court Street
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34
Turn left onto Tremont Street
102 m · 12 sec · Tremont Street
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35
Arrive at your destination
0 m · 1 sec · Tremont Street
Car Route Details
A richer read on the saved driving route between Cohasset and Boston.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Southeast Expressway
Merge slight left onto Southeast Expressway
3.28 mi · 00h 04m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Partly Sunny leaving Cohasset and Partly Sunny near Boston.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Cohasset to Boston?
The road trip is about 27.4 miles (44.1 km) and usually takes 00h 42m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Quincy is a useful midpoint, sitting about 10 miles from Cohasset and 17.3 miles from Boston.
How much longer is the road route than the straight-line distance?
The direct path is about 15.3 miles (24.7 km), while the road route adds roughly 12.1 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 7:00 AM to 7:00 PM EDT. If you want a more comfortable same-day return, try to leave by 7:04 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.77 one way or $7.55 round trip. Estimated CO2 is about 8.6 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Cohasset and Partly Sunny near Boston.
Stop Ideas Near Quincy
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Cocobeet - Boston
Boston's Old City Hall
Brockton City Hall
Boston City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Quincy.
Back Bay station
South Station
Route 128 station
North Station
Flight Path Map
This map shows the direct air route between Cohasset and Boston. Straight-line distance: 15.37 mi (24.74 km).
#1 Cohasset
City in Norfolk County, Massachusetts, United States of America
| Population | 8,529 |
| Coordinates | 42.2417700, -70.8036500 |
| Altitude | 6 |
| Country | United States |
#2 Boston
The twenty-first most populous city in the United States and the center of the Boston metropolitan area.
| Population | 691,531 |
| Coordinates | 42.3584300, -71.0597700 |
| Altitude | 14 |
| Country | United States |
End: Tremont Street (-71.060061, 42.358547)
Estimated Travel Time
Distance: 44 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 54m |
| 40 mph (64.37 km/h) | 00h 41m |
| 50 mph (80.47 km/h) | 00h 32m |
| 60 mph (96.56 km/h) | 00h 27m |
| 70 mph (112.65 km/h) | 00h 23m |
| 80 mph (129 km/h) | 00h 20m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $3.77 | $7.55 |
| Mid-grade | $4.40 | $4.27 | $8.53 |
| Premium | $4.80 | $4.66 | $9.31 |
| Diesel | $4.49 | $4.35 | $8.71 |
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 Massachusetts · 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.