How far is Boston, MA from Watertown, MA?
The driving distance from Boston, MA to Watertown, MA is about 8.3 miles (13.3 km), with a travel time of about 00h 15m by car.
- The straight-line flight distance is about 6.3 miles (10.2 km).
- For a round trip, plan for roughly 00h 30m 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 15m.
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.
The most populous city in Middlesex 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 Boston and Watertown.
Turn-by-Turn Driving Directions
Step-by-step road directions between Boston and Watertown.
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1
Start on Tremont Street
1.2 km · 3 min · Tremont Street
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2
Continue on Tremont Street
92 m · 15 sec · Tremont Street
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3
Continue on Tremont Street
147 m · 21 sec · Tremont Street
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4
Turn right onto Marginal Road
96 m · 13 sec · Marginal Road
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5
Take the ramp straight toward I 90 West, Massachusetts Turnpike Toll West
753 ft · 12 sec
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6
Merge slight left onto Massachusetts Turnpike
5.7 mi · 8 min · Massachusetts Turnpike
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7
Take the exit slight right toward Newton, Watertown
1725 ft · 49 sec
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8
Keep slight right to continue on Watertown
82 m · 9 sec
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9
Turn slight right onto Centre Street
611 ft · 23 sec · Centre Street
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10
Continue on Galen Street
2502 ft · 58 sec · Galen Street
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11
Turn sharp left onto Main Street
620 ft · 30 sec · Main Street
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12
Turn right onto Church Street
1701 ft · 49 sec · Church Street
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13
Turn left onto Oliver Street
131 m · 19 sec · Oliver Street
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14
Arrive at your destination
0 m · 1 sec · Oliver Street
Car Route Details
A richer read on the saved driving route between Boston and Watertown.
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.
Massachusetts Turnpike
Merge slight left onto Massachusetts Turnpike
5.65 mi · 00h 08m
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 Boston and Partly Sunny near Watertown.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Boston to Watertown?
The road trip is about 8.3 miles (13.3 km) and usually takes 00h 15m 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?
Cambridge is a useful midpoint, sitting about 4.1 miles from Boston and 4.1 miles from Watertown.
How much longer is the road route than the straight-line distance?
The direct path is about 6.3 miles (10.2 km), while the road route adds roughly 2 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 8:00 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $1.13 one way or $2.26 round trip. Estimated CO2 is about 2.6 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Boston and Partly Sunny near Watertown.
Stop Ideas Near Cambridge
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Cocobeet - Boston
Boston's Old City Hall
Cambridge City Hall
Shoppers World
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Cambridge.
North Station
Back Bay station
South Station
Anderson Regional Transportation Center
Flight Path Map
This map shows the direct air route between Boston and Watertown. Straight-line distance: 6.34 mi (10.21 km).
#1 Boston
The twenty-first most populous city in the United States and the center of the Boston metropolitan area.
| Population | 691,531 |
| Coordinates | 42.3584300, -71.0597700 |
| Altitude | 14 |
| Country | United States |
#2 Watertown
City in Middlesex County, Massachusetts, United States
| Population | 36,125 |
| Coordinates | 42.3709300, -71.1828300 |
| Altitude | 19 |
| Country | United States |
End: Watertown (-71.18283, 42.37093)
Estimated Travel Time
Distance: 13 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 16m |
| 40 mph (64.37 km/h) | 00h 12m |
| 50 mph (80.47 km/h) | 00h 09m |
| 60 mph (96.56 km/h) | 00h 08m |
| 70 mph (112.65 km/h) | 00h 07m |
| 80 mph (129 km/h) | 00h 06m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $1.13 | $2.26 |
| Mid-grade | $4.40 | $1.28 | $2.55 |
| Premium | $4.80 | $1.39 | $2.78 |
| Diesel | $4.49 | $1.30 | $2.60 |
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.