How far is Somerville, MA from Cohasset, MA?
The driving distance from Somerville, MA to Cohasset, MA is about 24.5 miles (39.4 km), with a travel time of about 00h 44m by car.
- The straight-line flight distance is about 18.1 miles (29.2 km).
- For a round trip, plan for roughly 01h 28m 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 44m.
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 Somerville and Cohasset.
Turn-by-Turn Driving Directions
Step-by-step road directions between Somerville and Cohasset.
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1
Start on the route
50 m · 18 sec
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2
Turn left onto Highland Avenue
2121 ft · 2 min · Highland Avenue
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3
Continue on Medford Street
134 m · 13 sec · Medford Street
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4
Turn left onto McGrath Highway
3180 ft · 1 min · McGrath Highway
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5
Take the exit slight right toward I 93, MA 38: Medford, Boston
63 m · 6 sec
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6
Keep slight right to continue on I 93 South: Boston
96 m · 9 sec
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7
Turn slight right onto I 93 South: Boston
734 ft · 18 sec
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8
Keep slight left to continue on I 93 South: Boston
1599 ft · 39 sec
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9
Merge slight left
8.3 mi · 12 min
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10
Take the exit slight right toward MA 3A South: Neponset, Quincy
1146 ft · 39 sec
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11
Merge slight left onto Gallivan Boulevard
624 ft · 8 sec · Gallivan Boulevard
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12
Take the exit straight
1514 ft · 32 sec
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13
Keep slight right to continue on Hancock Street
1038 ft · 26 sec · Hancock Street
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14
Turn slight right onto Newport Avenue Extension
2.3 mi · 5 min · Newport Avenue Extension
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15
Turn left onto Adams Street
1385 ft · 41 sec · Adams Street
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16
Turn straight onto Hancock Street
1335 ft · 34 sec · Hancock Street
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17
Continue on Washington Street
1.6 mi · 3 min · Washington Street
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18
Enter the roundabout and take exit 2 toward Washington Street
67 m · 4 sec · Washington Street
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19
Exit the roundabout onto Washington Street
138 m · 8 sec · Washington Street
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20
Continue on Fore River Bridge
1767 ft · 2 min · Fore River Bridge
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21
Continue on Bridge Street
1.7 mi · 3 min · Bridge Street
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22
Continue on Lincoln Street
1.5 mi · 2 min · Lincoln Street
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23
Continue on Broad Cove Road
3272 ft · 55 sec · Broad Cove Road
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24
Continue on Otis Street
2931 ft · 1 min · Otis Street
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25
Continue on Summer Street
848 ft · 15 sec · Summer Street
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26
Enter the roundabout and take exit 2 toward Rotary Circle
41 m · 2 sec · Justice Cushing Way
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27
Exit the rotary onto Justice Cushing Way
1.2 mi · 2 min · Justice Cushing Way
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28
Turn left onto East Street
1879 ft · 38 sec · East Street
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29
Continue on East Street
2903 ft · 58 sec · East Street
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30
Continue on North Main Street
2.1 mi · 4 min · North Main Street
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31
Arrive at your destination
0 m · 1 sec · North Main Street
Car Route Details
A richer read on the saved driving route between Somerville and Cohasset.
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.
I 93 South
Merge slight left
8.33 mi · 00h 12m
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 Somerville and Partly Sunny near Cohasset.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Somerville to Cohasset?
The road trip is about 24.5 miles (39.4 km) and usually takes 00h 44m 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 12.2 miles from Somerville and 12.2 miles from Cohasset.
How much longer is the road route than the straight-line distance?
The direct path is about 18.1 miles (29.2 km), while the road route adds roughly 6.4 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 7:02 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.35 one way or $6.69 round trip. Estimated CO2 is about 7.6 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Somerville and Partly Sunny near Cohasset.
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
City Hall Plaza
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 Somerville and Cohasset. Straight-line distance: 18.17 mi (29.24 km).
#1 Somerville
A city in Middlesex County, Massachusetts.
| Population | 80,935 |
| Coordinates | 42.3876000, -71.0995000 |
| Altitude | 28 |
| Country | United States |
#2 Cohasset
City in Norfolk County, Massachusetts, United States of America
| Population | 8,529 |
| Coordinates | 42.2417700, -70.8036500 |
| Altitude | 6 |
| Country | United States |
End: Cohasset (-70.80365, 42.24177)
Estimated Travel Time
Distance: 39 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 48m |
| 40 mph (64.37 km/h) | 00h 36m |
| 50 mph (80.47 km/h) | 00h 29m |
| 60 mph (96.56 km/h) | 00h 24m |
| 70 mph (112.65 km/h) | 00h 20m |
| 80 mph (129 km/h) | 00h 18m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $3.35 | $6.69 |
| Mid-grade | $4.40 | $3.78 | $7.56 |
| Premium | $4.80 | $4.13 | $8.25 |
| Diesel | $4.49 | $3.86 | $7.72 |
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.