Origin
Cohasset, MA
Late night in Cohasset on Sunday
Local time
3:35 AM
EDT
Current temp
53°F
Unavailable
Live forecast
Trip from Cohasset, MA to Boston, MA
Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
Drive Time
37m
Distance
20.1 mi
32 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$3
one way
EV Charging
Unknown
Best Time to Leave
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.
Boston, MA
Wikimedia Commons
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.
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.
1
Start on North Main Street
1.5 mi
·
2 min
·
North Main Street
2
Turn left onto King Street
0.2 mi
·
29 sec
·
King Street
3
Turn right onto MA 3A
0.8 mi
·
1 min
·
Chief Justice Cushing Highway
4
Continue on MA 3A
1.9 mi
·
2 min
·
Justice Cushing Way
Use the left / straight / right lanes.
5
Enter roundabout onto MA 3A
353 ft
·
6 sec
·
Summer Street
6
Continue on MA 3A
0.2 mi
·
16 sec
·
Summer Street
7
Continue on MA 3A
0.6 mi
·
1 min
·
Otis Street
8
Continue on MA 3A
0.6 mi
·
55 sec
·
Broad Cove Road
9
Continue on MA 3A
1.5 mi
·
2 min
·
Lincoln Street
10
Continue on MA 3A
1.7 mi
·
2 min
·
Bridge Street
11
Continue on MA 3A
0.3 mi
·
1 min
·
Fore River Bridge
12
Continue on MA 3A
464 ft
·
7 sec
·
Washington Street
13
Enter roundabout onto MA 3A
190 ft
·
3 sec
·
Washington Street
14
Continue on MA 3A
1.6 mi
·
2 min
·
Washington Street
Use the straight / right lanes.
15
Continue on Hancock Street
0.3 mi
·
33 sec
·
Hancock Street
Use the straight lane.
16
Keep slight left at fork onto Adams Street
0.3 mi
·
42 sec
·
Adams Street
17
Turn right onto Newport Avenue
2.3 mi
·
4 min
·
Newport Avenue
Use the right lane.
18
Turn slight left onto MA 3A
0.3 mi
·
33 sec
·
Hancock Street
19
Continue on MA 3A
0.2 mi
·
19 sec
·
Neponset Avenue
20
Merge onto MA 3A
247 ft
·
6 sec
·
William T. Morrissey Boulevard
Use the straight / left lanes.
21
Take the exit onto MA 3A
0.3 mi
·
34 sec
·
MA 3A
Toward I 93 North, US 1 North: Boston
22
Merge onto I 93; US 1; MA 3
3.3 mi
·
4 min
·
Southeast Expressway
Use the straight / slight right lanes.
23
Continue on I 93; US 1; MA 3
0.2 mi
·
19 sec
·
John F. Fitzgerald Expressway
24
Take the exit
0.5 mi
·
1 min
Toward South Station, Airport
Use the straight / slight left lanes.
25
Keep slight right at fork
0.5 mi
·
1 min
Toward South Station
Use the slight left / slight right lanes.
26
Continue on Lincoln Street
0.3 mi
·
53 sec
·
Lincoln Street
27
At end of road, turn left onto Summer Street
82 ft
·
3 sec
·
Summer Street
28
Turn right onto Devonshire Street
0.1 mi
·
31 sec
·
Devonshire Street
29
Turn left onto Franklin Street
173 ft
·
8 sec
·
Franklin Street
30
Turn right onto Arch Street
463 ft
·
20 sec
·
Arch Street
31
Turn left onto Milk Street
276 ft
·
11 sec
·
Milk Street
32
Continue on Washington Street
0.1 mi
·
32 sec
·
Washington Street
33
At end of road, turn left onto Court Street
473 ft
·
20 sec
·
Court Street
34
Turn left onto Tremont Street
333 ft
·
11 sec
·
Tremont Street
35
Arrive at destination
Tremont Street
Heads-up: tricky spots
5 of 195 decision points cluster between mile 4.5 and 18.7 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
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
6
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 lanes.
6
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
7
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
7
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
Fuel & Cost
Regular Gas
$3.22 one way
$6.43 round trip
$4.07/gal
25.4 MPG avg
7 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.43 | $3.51 | $7.02 |
| premium | $4.82 | $3.82 | $7.63 |
| diesel | $5.61 | $4.44 | $8.88 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$3
Estimated CO2 emission: 7 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $2 in charging · 0 stops · 71% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 6 | 0 | $2.11 | $0.96 |
| Efficient EV | 5 | 0 | $1.76 | $0.80 |
| EV Truck/SUV | 8 | 0 | $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.
Destination
Boston, MA
Late night in Boston on Sunday
Local time
3:35 AM
EDT
Current temp
62°F
Unavailable
Live forecast
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
9 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.
What kind of drive is this?
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.
Only 17% highway — the rest is turn-by-turn surface driving.
35 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 3.3 mi on Southeast Expressway.
How Hard Is This Drive?
9/10
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.
Driving Effort
9/10
Focused - lots of decisions in a short distance, but it is over quickly
Balances navigation complexity with total wheel time.
This is a short but busy drive. With 19 decision points packed into just 20.1 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 37m.
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.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
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
About the Cities
Arriving in Boston, MA
Full guide →A city of history and tradition, Boston offers a proud legacy of culture, education, and numerous sporting championships. The "shining city on a hill"s independent spirit has been displayed to the world ever since colonists were angry over a British tax on their beloved tea and dumped shiploads of it into the harbor in protest. In the early 1600s, the peninsula in Massachusetts that would become known as Boston was controlled by Native Americans until John Smith (English soldier, explorer, colonial governor, Admiral of New England, and author) named the area New England to attract European settlers. Boston was founded in 1630 by John Winthrop, making it one of the oldest cities in the U.S. No other American city has made more of an effort to preserve its history, and you'll find buildings that pre-date the republic dotted throughout the region.
City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 37m. Total distance: 20.1 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
37m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
Scenic Drive
Mostly surface roads route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 3.3 miles on Southeast Expressway. The full list of main roads is in the Roads section above.
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 Boston, MA before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
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.
Yes — Adams National Historical Park, Boston National Historical Park and Boston Harbor Islands National Recreation Area (6 total within detour distance). See the National Parks section for detour distances and tips on detours.
Yes. A round trip is manageable in a single day if you plan a break at Boston, MA before heading back.
How this page is built
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, and NPS for national parks. See our methodology for refresh cadence and limitations.
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