Trip from Boston, MA to Cohasset, MA

Drive Time

37m

Distance

20.3 mi

33 km

Drive Score

7/10

Good drive

Same Day?

Yes, doable

Fuel Cost

one way

EV Charging

station data

Best Time to Leave

Save up to 10 min

4 AM

0h 34m ★

6 AM

0h 38m

8 AM

0h 44m

10 AM

0h 40m

12 PM

0h 39m

3 PM

0h 40m

5 PM

0h 44m

8 PM

0h 36m

Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.

Best Time Drive vs Fly

Google Maps Waze Apple Maps

Download GPX

Boston, MA

Phil Evenden

Trip Overview

If you are looking to escape Boston for the coast, the 20.3-mile trip to Cohasset is a quick and manageable excursion. Expect a driving time of approximately 37 minutes, making this an ideal day trip that requires no overnight stay. You will navigate through the Northeast region using a combination of the Southeast Expressway, Newport Avenue Extension, and North Main Street. With fuel costs estimated at just $3, it is an incredibly budget-friendly outing for a short getaway. Because the journey is brief and straightforward, you have plenty of flexibility to plan your departure around your own schedule.

Trip Pace

Same-day drive is realistic

A same-day return is realistic if you keep stops short.

Break Rhythm

0 planned breaks

A short stop every 2 to 3 hours is enough for this drive.

Midpoint

10.1 miles from Boston, MA

A natural place for your longest stop of the day , about 19m into the drive .

Drive Character

Expect a turn-heavy local drive that demands your attention rather than a monotonous interstate cruise. While 25% of the route consists of highway driving, the majority of your time is spent navigating smaller local roads. The longest uninterrupted stretch you will encounter is a 3.8-mile segment on the Southeast Expressway before transitioning into more technical driving. This shift creates a distinct contrast between the initial fast-paced highway section and the slower, more deliberate pace of the final approach. You will find that the road's personality changes significantly as you leave the major expressway behind.

This route has more turning and local-road decision points than a simple highway run.

There are about 34 navigation steps in the underlying route data, so the final approach matters more than the middle miles.

Southeast Expressway is the longest continuous segment at about 3.8 miles.

How Hard Is This Drive?

Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes early in the drive near School Street.

Route Complexity 8/10

Demanding - plan breaks and stay ahead of the key maneuvers

This is a demanding drive. With 17 significant decision points across 20.3 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: near the start (School Street): Lane positioning matters here; at 0.2 miles (Washington Street): Navigation decision point; at 0.2 miles (Devonshire Street): Navigation decision point.

Critical Maneuvers

5 of 17 key points

These are the spots where you need to pay the most attention. Preview them before you drive.

0 mi into trip | ~0m in | School Street

Turn left onto School Street

Lane positioning matters here

Use the left lane.

0.2 mi into trip | ~0m in | Washington Street

At end of road, turn left onto Washington Street

Navigation decision point

0.2 mi into trip | ~0m in | Devonshire Street

Turn right onto Devonshire Street

Navigation decision point

5.8 mi into trip | ~10m in | MA 3A

Take the exit onto MA 3A toward MA 3A South: Neponset, Quincy

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 12 Toward MA 3A South: Neponset, Quincy

6.4 mi into trip | ~11m in | MA 3A / Hancock Street

Keep slight right at fork onto MA 3A / Hancock Street

Highway fork - watch signs carefully. Lane positioning matters here

Use the slight right lane.

Towns Along This Route

On the drive from Boston, MA to Cohasset, MA, road signs begin pointing toward Quincy along the way.

Quincy

5.8 mi in | ~10m | via MA 3A

Main Roads

Road	Distance	Duration
Southeast Expressway	3.8 mi	5m
Newport Avenue Extension	2.3 mi	5m
North Main Street	2.1 mi	3m
Washington Street	1.7 mi	2m
Bridge Street	1.7 mi	2m
Lincoln Street	1.5 mi	2m
Justice Cushing Way	1.2 mi	1m
John F. Fitzgerald Expressway	1.2 mi	2m

Longest stretch: Southeast Expressway — 3.8 mi, about 5m

Turn-by-Turn Driving Directions

Step-by-step road directions between Boston, MA and Cohasset, MA.

Start on Tremont Street

230 ft · 16 sec · Tremont Street

Turn left onto School Street

0.1 mi · 25 sec · School Street

Use the left lane.

At end of road, turn left onto Washington Street

110 ft · 4 sec · Washington Street

Turn right onto Water Street

210 ft · 11 sec · Water Street

Turn right onto Devonshire Street

0.2 mi · 36 sec · Devonshire Street

Continue on Otis Street

485 ft · 18 sec · Otis Street

Continue on Kingston Street

0.1 mi · 31 sec · Kingston Street

Turn left onto Essex Street

244 ft · 8 sec · Essex Street

Turn slight right

86 ft · 5 sec

Take the ramp

0.2 mi · 24 sec

Toward I 93 South: Quincy

Merge onto I 93; US 1; MA 3

1.2 mi · 2 min · John F. Fitzgerald Expressway

Use the none / straight / slight right lanes.

Continue on I 93; US 1; MA 3

3.8 mi · 5 min · Southeast Expressway

Use the none lane.

Take the exit onto MA 3A

0.2 mi · 39 sec · MA 3A

Exit 12 Toward MA 3A South: Neponset, Quincy Use the slight right lane.

Merge onto MA 3A

0.1 mi · 8 sec · Gallivan Boulevard

Take the exit onto MA 3A

0.3 mi · 32 sec · MA 3A

Keep slight right at fork onto MA 3A

0.2 mi · 25 sec · Hancock Street

Use the slight right lane.

Turn slight right onto Newport Avenue Extension

2.3 mi · 5 min · Newport Avenue Extension

Use the right lane.

Turn left onto Adams Street

0.3 mi · 41 sec · Adams Street

Turn straight onto Hancock Street

0.3 mi · 33 sec · Hancock Street

Continue on Washington Street

1.6 mi · 2 min · Washington Street

Use the straight lane.

Enter roundabout onto MA 3A

220 ft · 3 sec · Washington Street

Continue on MA 3A

451 ft · 7 sec · Washington Street

Continue on MA 3A

0.3 mi · 1 min · Fore River Bridge

Continue on MA 3A

1.7 mi · 2 min · Bridge Street

Continue on MA 3A

1.5 mi · 2 min · Lincoln Street

Use the none lane.

Continue on MA 3A

0.6 mi · 55 sec · Broad Cove Road

Continue on MA 3A

0.6 mi · 1 min · Otis Street

Continue on MA 3A

0.2 mi · 14 sec · Summer Street

Enter roundabout onto MA 3A

134 ft · 2 sec · Justice Cushing Way

Continue on MA 3A

1.2 mi · 1 min · Justice Cushing Way

Use the none lane.

Turn left onto MA 228

0.4 mi · 37 sec · East Street

Use the left lane.

Continue on East Street

0.5 mi · 58 sec · East Street

Continue on North Main Street

2.1 mi · 3 min · North Main Street

Arrive at destination

North Main Street

Trip Plan

Since this is a short trip with zero scheduled stops, you have the advantage of complete flexibility when choosing your departure time. Keep in mind that the route relies heavily on local roads, so stay alert for changing speed limits and frequent turns as you exit the expressway. You won't need to worry about complex refueling strategies given the low $3 fuel cost, but it is always wise to ensure your tank is topped off before leaving the city. Use the short 37-minute duration to your benefit by keeping your packing light and focusing on the transition from urban traffic to the local roads leading into Cohasset. Enjoy the simplicity of this quick, direct transition from the city to the coast.

Morning Departure

Leave by 9 AM and you'll arrive before lunch.

Evening Departure

Even a 4 PM departure gets you there before dark in summer.

You can normally do this drive in one day.

You may only need one short stretch break if traffic stays light.

The halfway point lands around 10.1 miles from Boston, MA, or about 19m into the drive.

The longest continuous stretch on this route runs about 3.8 miles.

This is a comfortable same-day trip.

Departure

Before you leave

Start with fuel, water, and navigation already sorted so the first hour feels easy.

First stop

Around 20.3 miles or 37m in

Use this first pause for coffee, a restroom break, and a quick traffic check ahead.

Halfway reset

Around 10.1 miles or 19m in

This is the best place for your longest stop, a real meal, and a full fuel check.

Final approach

Final hour starts around 32m

Traffic, exits, and arrival timing usually matter more near Cohasset, MA than in the middle of the route.

Before You Leave

Open the route before leaving Boston, MA 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.

Day 1

Settle into the route from Boston, MA

This is one driving day of about 20.3 miles and 37m.

Your first comfortable stop window is around 80 miles from Boston, MA.

This route can stay practical as a one-day drive if traffic stays reasonable.

You may only need one short stretch stop if conditions stay smooth.

The longest stretch is on Southeast Expressway for about 3.8 miles.

Where to Stop

Rest stops, refuel points, and overnight suggestions along this route.

Halfway Point

Midpoint

About 10.1 mi from Boston, MA · 19m into the drive

Mid-route town

Meal stop

Brookhaven, NY

10 mi into the route

Best for: Lunch, fuel, and a longer reset

This sits close to the middle of the route, so it works well for the longest stop of the day.

Pacing Suggestions

Rocky Point, NY

Fuel and coffee

A short stop after about 20.3 miles helps settle the day before fatigue starts building.

Brookhaven, NY

Meal break

The midpoint is around 10.1 miles from Boston, MA, which is a good place for a longer meal and fuel stop.

Arriving in Cohasset, MA

The final approach into Cohasset, MA usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.

Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Cohasset, MA.

These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.

Fuel & Cost

Regular Gas

$3.23 one way

$6.46 round trip

$4.04/gal 25.4 MPG avg 7 kg CO₂

Fuel Type	$/gal	One Way	Round Trip
midgrade	$4.40	$3.51	$7.03
premium	$4.80	$3.84	$7.67
diesel	$5.64	$4.51	$9.02

No toll roads detected on this route.

Estimated Trip Cost (one way, 1 person)

Fuel

Meals

$25–$50

Total

$28–$53

Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.

Estimated CO2 emission: 7.1 kg one way. Prices: EIA weekly data, 2026-04-06.

Driving Electric?

About $2 in charging · 0 stops · 71% less CO₂

Vehicle Type	kWh	DC Fast	Home Charge
Average EV	6.1	$2.13	$0.97
Efficient EV	5.1	$1.78	$0.81
EV Truck/SUV	8.1	$2.84	$1.30

Gas CO2

7 kg

EV CO2

2 kg (71% less)

This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.

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 data refreshed 2 days ago

Origin

Boston, MA

Evening in Boston on Sunday

Local time

8:28 PM

EDT

Current temp

51°F

Unavailable

Live forecast

Destination

Cohasset, MA

Evening in Cohasset on Sunday

Local time

8:28 PM

EDT

Current temp

50°F

Unavailable

Live forecast

Along the Route

49°F

Brookhaven, NY

10 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.

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

1 degrees cooler at arrival

A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.

Road read

37m on the road

Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.

Weather data from the National Weather Service. Conditions may change; check closer to your travel date.

Frequently Asked Questions

The drive from Boston, MA to Cohasset, MA covers 20.3 miles and takes about 37m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.

The main roads are Southeast Expressway, Newport Avenue Extension, North Main Street. Expect a mix of highway and local road driving.

This is a comfortable same-day trip.

The midpoint is about 10.1 miles from Boston, MA. Look for rest areas, gas stations, or food options near the halfway mark.

At current regular gas prices, expect to spend about $3.23 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.

Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.

On the drive from Boston, MA to Cohasset, MA, road signs begin pointing toward Quincy along the way.

Was this route helpful?

Thanks for your feedback!

Your tip has been submitted. Thanks!

/500

Explore More

Return Trip

Cohasset, MA to Boston, MA

Plan the drive back the other way.

20.1 mi 37m

Explore more options from Boston, MA or browse trips ending in Cohasset, MA.

Looking for more statewide routes? Browse MA road trips.

Explore maps for Boston, MA or Cohasset, MA on MapSof.net.

Trip from Boston, MA to Cohasset, MA

Best Time to Leave

Trip Overview

Drive Character

How Hard Is This Drive?

Critical Maneuvers

Towns Along This Route

Main Roads

Turn-by-Turn Driving Directions

Trip Plan

Before You Leave

Where to Stop

Pacing Suggestions

Arriving in Cohasset, MA

Fuel & Cost

Travel Intel

Boston, MA

Cohasset, MA

Same local time

1 degrees cooler at arrival

37m on the road

Frequently Asked Questions

Was this route helpful?

Explore More

Continue From Cohasset, MA

More from Boston, MA

More trips to Cohasset, MA