How far is Boston, MA from Chelmsford, MA?
The driving distance from Boston, MA to Chelmsford, MA is about 27.5 miles (44.2 km), with a travel time of about 00h 44m by car.
- The straight-line flight distance is about 22.9 miles (36.8 km).
- For a round trip, plan for roughly 01h 29m 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 44m.
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 Middlesex County, Massachusetts, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny then Slight Chance Rain Showers
Mostly Sunny then Slight Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Boston and Chelmsford.
Turn-by-Turn Driving Directions
Step-by-step road directions between Boston and Chelmsford.
-
1
Start on Tremont Street
70 m · 11 sec · Tremont Street
-
2
Turn right onto Beacon Street
92 m · 11 sec · Beacon Street
-
3
Turn right onto Somerset Street
104 m · 13 sec · Somerset Street
-
4
Turn left onto Ashburton Place
64 m · 7 sec · Ashburton Place
-
5
Keep slight right to continue on Ashburton Place
77 m · 9 sec · Ashburton Place
-
6
Turn straight onto Bowdoin Street
574 ft · 24 sec · Bowdoin Street
-
7
Turn right onto Cambridge Street
134 m · 22 sec · Cambridge Street
-
8
Turn left onto Sudbury Street
1490 ft · 1 min · Sudbury Street
-
9
Take the ramp left toward I 93 North: Concord NH
1.1 mi · 2 min
-
10
Merge slight left
2.8 mi · 4 min
-
11
Take the exit slight right toward MA 16 West: Mystic Valley Parkway, Arlington
1293 ft · 32 sec
-
12
Continue on Mystic Valley Parkway
1.1 mi · 2 min · Mystic Valley Parkway
-
13
Turn right onto Winthrop Street
760 ft · 22 sec · Winthrop Street
-
14
Enter the roundabout and take exit 3 toward Winthrop Street
36 m · 2 sec · Winthrop Street
-
15
Exit the roundabout onto Winthrop Street
1.3 mi · 2 min · Winthrop Street
-
16
Continue on Main Street
2682 ft · 46 sec · Main Street
-
17
Enter the roundabout and take exit 3 toward Bacon Street
29 m · 2 sec · Bacon Street
-
18
Exit the roundabout onto Bacon Street
1.2 km · 2 min · Bacon Street
-
19
Turn left onto Church Street
1781 ft · 38 sec · Church Street
-
20
Turn right onto Cambridge Street
1.1 mi · 1 min · Cambridge Street
-
21
Continue on Cambridge Road
2 mi · 2 min · Cambridge Road
-
22
Continue on Cambridge Street
1 km · 48 sec · Cambridge Street
-
23
Take the exit straight toward I 95 South, US 3 North: Waltham, Lowell
945 ft · 27 sec
-
24
Merge slight left onto Yankee Division Highway
1.1 mi · 2 min · Yankee Division Highway
-
25
Take the exit slight right toward US 3 North: Lowell, Middlesex Turnpike, Burlington, Nashua New Hampshire
626 ft · 15 sec
-
26
Keep slight left to continue on US 3 North: Lowell, Nashua New Hampshire
1377 ft · 34 sec
-
27
Keep slight right to continue on US 3 North: Lowell, Nashua New Hampshire
9.3 mi · 11 min
-
28
Take the exit slight right toward MA 129: Billerica, Chelmsford
1499 ft · 37 sec
-
29
Keep slight right to continue on MA 129 West: Chelmsford
92 m · 7 sec
-
30
Turn straight onto Billerica Road
2.4 mi · 4 min · Billerica Road
-
31
Turn right onto North Road
152 m · 23 sec · North Road
-
32
Turn left onto Academy Street
111 m · 9 sec · Academy Street
-
33
Turn right onto Westford Street
1.2 km · 2 min · Westford Street
-
34
Turn left onto Clover Hill Drive
961 ft · 42 sec · Clover Hill Drive
-
35
Arrive at your destination
0 m · 1 sec · Clover Hill Drive
Car Route Details
A richer read on the saved driving route between Boston and Chelmsford.
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.
US 3 North
Keep slight right to continue on US 3 North: Lowell, Nashua New Hampshire
9.28 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.
Mostly Sunny then Slight Chance Rain Showers leaving Boston and Mostly Sunny then Slight Chance Rain Showers near Chelmsford.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Boston to Chelmsford?
The road trip is about 27.5 miles (44.2 km) and usually takes 00h 44m 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?
Burlington is a useful midpoint, sitting about 13.7 miles from Boston and 13.7 miles from Chelmsford.
How much longer is the road route than the straight-line distance?
The direct path is about 22.9 miles (36.8 km), while the road route adds roughly 4.6 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 7:00 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.77 one way or $7.55 round trip. Estimated CO2 is about 8.6 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny then Slight Chance Rain Showers around Boston and Mostly Sunny then Slight Chance Rain Showers near Chelmsford.
Stop Ideas Near Burlington
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 Burlington.
Anderson Regional Transportation Center
North Station
Back Bay station
South Station
Flight Path Map
This map shows the direct air route between Boston and Chelmsford. Straight-line distance: 22.89 mi (36.83 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 Chelmsford
Town in Middlesex County, Massachusetts, United States
| Population | 35,528 |
| Coordinates | 42.5998100, -71.3672800 |
| Altitude | 75 |
| Country | United States |
End: Chelmsford (-71.36728, 42.59981)
Estimated Travel Time
Distance: 44 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 54m |
| 40 mph (64.37 km/h) | 00h 41m |
| 50 mph (80.47 km/h) | 00h 32m |
| 60 mph (96.56 km/h) | 00h 27m |
| 70 mph (112.65 km/h) | 00h 23m |
| 80 mph (129 km/h) | 00h 20m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $3.77 | $7.55 |
| Mid-grade | $4.40 | $4.27 | $8.53 |
| Premium | $4.80 | $4.66 | $9.31 |
| Diesel | $4.49 | $4.35 | $8.71 |
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 · May 31, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.