Trip from Cohasset, MA to Boston, MA

Drive Time

37m

Distance

20.1 mi

32 km

Drive Score

6/10

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 37m

8 AM

0h 44m

10 AM

0h 40m

12 PM

0h 39m

3 PM

0h 40m

5 PM

0h 43m

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

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Boston, MA

Phil Evenden

Trip Overview

If you are looking for a quick transition from the coastal charm of Cohasset to the urban energy of Boston, this 20.1-mile trip is an efficient way to make the connection. You can easily complete the drive in about 37 minutes, making it a perfect one-day excursion. Budgeting around $3 for fuel keeps this trip very affordable, especially since you won't need to plan for any overnight stops. Because both locations sit within the Northeast region, you will experience a consistent New England atmosphere throughout the journey. Since there are no required stops, you have the flexibility to plan your arrival in the city exactly when you need to be there.

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 miles from Cohasset, MA

A natural place for your longest stop of the day , about 17m into the drive .

Drive Character

Expect a turn-heavy local drive that requires your full attention as you navigate from the coast toward the city. While roughly 17% of the route involves highway driving, you will spend the majority of your time on local roads like Newport Avenue and Justice Cushing Way. The longest uninterrupted stretch you will encounter is a brief 3.3-mile segment on the Southeast Expressway. This mix of tight turns and short highway bursts creates a dynamic experience that keeps you engaged behind the wheel. Prepare for a transition from quieter local streets into the busier, more complex navigation required as you approach the metropolitan center.

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

There are about 35 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 3.3 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 around 4.5 miles in near MA 3A / Summer Street.

Route Complexity 9/10

High effort - long or complex enough to need steady focus all day

This is a demanding drive. With 19 significant decision points across 20.1 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 4.5 miles (MA 3A / Summer Street): Roundabout - know your exit number before entering; at 14.4 miles (MA 3A / William T. Morrissey Boulevard): Merge point - match speed before joining. Lane positioning matters here; at 14.4 miles (MA 3A): Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.

Critical Maneuvers

5 of 19 key points

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

4.5 mi into trip | ~7m in | MA 3A / Summer Street

Enter roundabout onto MA 3A / Summer Street

Roundabout - know your exit number before entering

14.4 mi into trip | ~26m in | MA 3A / William T. Morrissey Boulevard

Merge onto MA 3A / William T. Morrissey Boulevard

Merge point - match speed before joining. Lane positioning matters here

Use the straight / left / none lanes.

14.4 mi into trip | ~26m in | MA 3A

Take the exit onto MA 3A toward I 93 North, US 1 North: Boston

Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one

Toward I 93 North, US 1 North: Boston

18.2 mi into trip | ~32m in

Take the exit toward South Station, Airport

Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one

Use the straight / slight left lanes. Toward South Station, Airport

18.7 mi into trip | ~33m in

Keep slight right at fork toward South Station

Highway fork - watch signs carefully. Lane positioning matters here

Use the slight left / slight right lanes. Toward South Station

Towns Along This Route

Between Cohasset, MA and Boston, MA, road signs point toward Station and Airport.

Station

18.2 mi in | ~32m

Airport

18.2 mi in | ~32m

Main Roads

Road	Distance	Duration
Southeast Expressway	3.3 mi	4m
Newport Avenue	2.3 mi	4m
Justice Cushing Way	1.9 mi	2m
Washington Street	1.9 mi	3m
Lincoln Street	1.8 mi	3m
Bridge Street	1.7 mi	2m
North Main Street	1.5 mi	2m
Chief Justice Cushing Highway	0.8 mi	1m

Longest stretch: Southeast Expressway — 3.3 mi, about 4m

Turn-by-Turn Driving Directions

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

Start on North Main Street

1.5 mi · 2 min · North Main Street

Turn left onto King Street

0.2 mi · 29 sec · King Street

Turn right onto MA 3A

0.8 mi · 1 min · Chief Justice Cushing Highway

Continue on MA 3A

1.9 mi · 2 min · Justice Cushing Way

Use the left / straight / right lanes.

Enter roundabout onto MA 3A

353 ft · 6 sec · Summer Street

Continue on MA 3A

0.2 mi · 16 sec · Summer Street

Continue on MA 3A

0.6 mi · 1 min · Otis Street

Continue on MA 3A

0.6 mi · 55 sec · Broad Cove Road

Continue on MA 3A

1.5 mi · 2 min · Lincoln Street

Use the none lane.

Continue on MA 3A

1.7 mi · 2 min · Bridge Street

Continue on MA 3A

0.3 mi · 1 min · Fore River Bridge

Continue on MA 3A

464 ft · 7 sec · Washington Street

Enter roundabout onto MA 3A

190 ft · 3 sec · Washington Street

Continue on MA 3A

1.6 mi · 2 min · Washington Street

Use the straight / right lanes.

Continue on Hancock Street

0.3 mi · 33 sec · Hancock Street

Use the straight lane.

Keep slight left at fork onto Adams Street

0.3 mi · 42 sec · Adams Street

Turn right onto Newport Avenue

2.3 mi · 4 min · Newport Avenue

Use the right lane.

Turn slight left onto MA 3A

0.3 mi · 33 sec · Hancock Street

Continue on MA 3A

0.2 mi · 19 sec · Neponset Avenue

Merge onto MA 3A

247 ft · 6 sec · William T. Morrissey Boulevard

Use the straight / left / none lanes.

Take the exit onto MA 3A

0.3 mi · 34 sec · MA 3A

Toward I 93 North, US 1 North: Boston

Merge onto I 93; US 1; MA 3

3.3 mi · 4 min · Southeast Expressway

Use the none / straight / slight right lanes.

Continue on I 93; US 1; MA 3

0.2 mi · 19 sec · John F. Fitzgerald Expressway

Use the none lane.

Take the exit

0.5 mi · 1 min

Toward South Station, Airport Use the straight / slight left lanes.

Keep slight right at fork

0.5 mi · 1 min

Toward South Station Use the slight left / slight right lanes.

Continue on Lincoln Street

0.3 mi · 53 sec · Lincoln Street

Use the none lane.

At end of road, turn left onto Summer Street

82 ft · 3 sec · Summer Street

Turn right onto Devonshire Street

0.1 mi · 31 sec · Devonshire Street

Turn left onto Franklin Street

173 ft · 8 sec · Franklin Street

Turn right onto Arch Street

463 ft · 20 sec · Arch Street

Turn left onto Milk Street

276 ft · 11 sec · Milk Street

Continue on Washington Street

0.1 mi · 32 sec · Washington Street

At end of road, turn left onto Court Street

473 ft · 20 sec · Court Street

Turn left onto Tremont Street

333 ft · 11 sec · Tremont Street

Arrive at destination

Tremont Street

Trip Plan

Because this is a short, 20.1-mile commute, you have significant flexibility in your departure timing, though checking traffic patterns before you leave is always wise. You won't need to worry about long-distance pacing since the entire trip takes less than an hour. Keep an eye on your navigation closely, as the turn-heavy nature of the route means you will be making frequent adjustments to your course. Since there are no official stops planned, handle any refueling needs before you head out to ensure a smooth, uninterrupted run. Remember that the Southeast Expressway portion is quite short, so stay alert for merging traffic during that quick transition.

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 miles from Cohasset, MA, or about 17m into the drive.

The longest continuous stretch on this route runs about 3.3 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 20.1 miles or 37m in

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

Halfway reset

Around 10 miles or 17m in

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

Final approach

Final hour starts around 30m

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

Before You Leave

Open the route before leaving Cohasset, 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 Cohasset, MA

This is one driving day of about 20.1 miles and 37m.

Your first comfortable stop window is around 80 miles from Cohasset, 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 3.3 miles.

Where to Stop

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

Halfway Point

Midpoint

About 10 mi from Cohasset, MA · 17m 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

Brookhaven, NY

Fuel and coffee

A short stop after about 20.1 miles helps settle the day before fatigue starts building.

Brookhaven, NY

Meal break

The midpoint is around 10 miles from Cohasset, MA, which is a good place for a longer meal and fuel stop.

Arriving in Boston, MA

The final approach into Boston, 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 Boston, 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

$3.20 one way

$6.40 round trip

$4.04/gal 25.4 MPG avg 7 kg CO₂

Fuel Type	$/gal	One Way	Round Trip
midgrade	$4.40	$3.48	$6.96
premium	$4.80	$3.80	$7.60
diesel	$5.64	$4.47	$8.93

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 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	$2.11	$0.96
Efficient EV	5	$1.76	$0.80
EV Truck/SUV	8	$2.81	$1.29

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 3 days ago

Origin

Cohasset, MA

Evening in Cohasset on Sunday

Local time

8:28 PM

EDT

Current temp

50°F

Unavailable

Live forecast

Destination

Boston, MA

Evening in Boston on Sunday

Local time

8:28 PM

EDT

Current temp

51°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 warmer 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 Cohasset, MA to Boston, MA covers 20.1 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, Justice Cushing Way. Expect a mix of highway and local road driving.

This is a comfortable same-day trip.

The midpoint is about 10 miles from Cohasset, MA. Look for rest areas, gas stations, or food options near the halfway mark.

At current regular gas prices, expect to spend about $3.20 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.

Between Cohasset, MA and Boston, MA, road signs point toward Station and Airport.

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Return Trip

Boston, MA to Cohasset, MA

Plan the drive back the other way.

20.3 mi 37m

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Trip from Cohasset, MA to Boston, 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 Boston, MA

Fuel & Cost

Travel Intel

Cohasset, MA

Boston, MA

Same local time

1 degrees warmer at arrival

37m on the road

Frequently Asked Questions

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