How far is Cambridge, MA from Weymouth, MA?
The driving distance from Cambridge, MA to Weymouth, MA is about 19.4 miles (31.2 km), with a travel time of about 00h 34m by car.
- The straight-line flight distance is about 13.6 miles (21.9 km).
- For a round trip, plan for roughly 01h 09m 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 34m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Town in 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 Cambridge and Weymouth.
Turn-by-Turn Driving Directions
Step-by-step road directions between Cambridge and Weymouth.
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1
Start on Leonard Avenue
81 m · 17 sec · Leonard Avenue
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2
Turn left onto Cambridge Street
1391 ft · 1 min · Cambridge Street
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3
Continue on Cambridge Street
1.3 mi · 4 min · Cambridge Street
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4
Merge slight left onto Monsignor O'Brien Highway
755 ft · 23 sec · Monsignor O'Brien Highway
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5
Continue on Charles River Dam Road
1832 ft · 1 min · Charles River Dam Road
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6
Take the exit straight toward I 93 South: Quincy, Logan Airport
2427 ft · 1 min
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7
Merge slight left onto John F. Fitzgerald Expressway
2.7 mi · 4 min · John F. Fitzgerald Expressway
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8
Continue on Southeast Expressway
8 mi · 11 min · Southeast Expressway
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9
Keep slight left to continue on MA 3 South: Cape Cod
2.1 mi · 3 min
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10
Take the exit slight right toward Braintree, South Braintree, Braintree Station, Registry of Motor Vehicles
1332 ft · 38 sec
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11
Enter the roundabout and take exit 3 toward Union Street Rotary
1306 ft · 26 sec · Union Street
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12
Exit the rotary onto Union Street
1.2 mi · 2 min · Union Street
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13
Continue on Commercial Street
2095 ft · 42 sec · Commercial Street
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14
Continue on Commercial Street
131 m · 18 sec · Commercial Street
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15
Continue on Washington Street
1942 ft · 39 sec · Washington Street
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16
Turn left onto Broad Street
1.3 km · 1 min · Broad Street
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17
Turn left onto Academy Avenue
2894 ft · 1 min · Academy Avenue
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18
Turn right
74 m · 20 sec
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19
At the end of the road, turn right
85 m · 20 sec
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20
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Cambridge and Weymouth.
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
Continue on Southeast Expressway
7.98 mi · 00h 11m
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 Cambridge and Partly Sunny near Weymouth.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Cambridge to Weymouth?
The road trip is about 19.4 miles (31.2 km) and usually takes 00h 34m 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?
Milton is a useful midpoint, sitting about 9.7 miles from Cambridge and 9.7 miles from Weymouth.
How much longer is the road route than the straight-line distance?
The direct path is about 13.6 miles (21.9 km), while the road route adds roughly 5.8 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 7:20 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $2.65 one way or $5.29 round trip. Estimated CO2 is about 6 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Cambridge and Partly Sunny near Weymouth.
Stop Ideas Near Milton
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Cocobeet - Boston
Boston's Old City Hall
Cambridge City Hall
City Hall Plaza
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Milton.
Route 128 station
Back Bay station
South Station
North Station
Flight Path Map
This map shows the direct air route between Cambridge and Weymouth. Straight-line distance: 13.61 mi (21.91 km).
#1 Cambridge
The most populous city in Middlesex County, Massachusetts.
| Population | 119,192 |
| Coordinates | 42.3751000, -71.1056100 |
| Altitude | 5 |
| Country | United States |
#2 Weymouth
The most populous city in Norfolk County, Massachusetts.
| Population | 58,104 |
| Coordinates | 42.2209300, -70.9397700 |
| Altitude | 31 |
| Country | United States |
End: Weymouth (-70.93977, 42.22093)
Estimated Travel Time
Distance: 31 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 38m |
| 40 mph (64.37 km/h) | 00h 29m |
| 50 mph (80.47 km/h) | 00h 23m |
| 60 mph (96.56 km/h) | 00h 19m |
| 70 mph (112.65 km/h) | 00h 16m |
| 80 mph (129 km/h) | 00h 14m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $2.65 | $5.29 |
| Mid-grade | $4.40 | $2.99 | $5.98 |
| Premium | $4.80 | $3.26 | $6.53 |
| Diesel | $4.49 | $3.05 | $6.10 |
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.