How far is Somerville, MA from Groton, MA?
The driving distance from Somerville, MA to Groton, MA is about 31.6 miles (50.9 km), with a travel time of about 00h 57m by car.
- The straight-line flight distance is about 28.7 miles (46.2 km).
- For a round trip, plan for roughly 01h 55m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM EST.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 57m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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.
City in Middlesex County, Massachusetts, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Light Rain Likely
Light Rain Likely
Driving Route Map
The map below follows the saved road route between Somerville and Groton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Somerville and Groton.
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1
Start on the route
50 m · 14 sec
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2
Turn right onto Highland Avenue
1.3 mi · 5 min · Highland Avenue
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3
Turn left onto Dover Street
1483 ft · 1 min · Dover Street
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4
Turn right onto Massachusetts Avenue
1 km · 1 min · Massachusetts Avenue
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5
Turn left onto Alewife Brook Parkway
1895 ft · 50 sec · Alewife Brook Parkway
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6
Turn right onto Concord Turnpike
4.1 mi · 6 min · Concord Turnpike
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7
Continue on Concord Highway
2.9 mi · 4 min · Concord Highway
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8
Continue on Cambridge Turnpike
3.3 mi · 5 min · Cambridge Turnpike
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9
Continue on Concord Turnpike
3.9 mi · 6 min · Concord Turnpike
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10
Continue on Elm Street
1635 ft · 35 sec · Elm Street
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11
Enter the roundabout and take exit 2 toward Concord Rotary
69 m · 3 sec · Elm Street
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12
Exit the rotary onto Elm Street
3128 ft · 60 sec · Elm Street
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13
Continue on Great Road
9.1 mi · 17 min · Great Road
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14
Continue on Boston Road
3.9 mi · 7 min · Boston Road
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15
Continue on Main Street
1 km · 2 min · Main Street
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16
Keep slight right to continue on Main Street
534 ft · 16 sec · Main Street
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17
Turn right
41 m · 15 sec
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18
At the end of the road, turn left
41 m · 14 sec
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19
Turn left
11 m · 3 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 Somerville and Groton.
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.
Great Road
Continue on Great Road
9.11 mi · 00h 17m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Light Rain Likely leaving Somerville and Light Rain Likely near Groton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Somerville to Groton?
The road trip is about 31.6 miles (50.9 km) and usually takes 00h 57m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
West Concord is a useful midpoint, sitting about 15.8 miles from Somerville and 15.8 miles from Groton.
How much longer is the road route than the straight-line distance?
The direct path is about 28.7 miles (46.2 km), while the road route adds roughly 2.9 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 8:00 AM to 10:00 AM EST. If you want a more comfortable same-day return, try to leave by 4:34 PM EST.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.62 one way or $9.24 round trip. Estimated CO2 is about 10 kg one way.
What should you check before leaving?
Before you leave, expect Light Rain Likely around Somerville and Light Rain Likely near Groton.
Stop Ideas Near West Concord
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to West Concord.
Framingham station
Anderson Regional Transportation Center
Back Bay station
North Station
Flight Path Map
This map shows the direct air route between Somerville and Groton. Straight-line distance: 28.71 mi (46.2 km).
#1 Somerville
A city in Middlesex County, Massachusetts.
| Population | 80,935 |
| Coordinates | 42.3876000, -71.0995000 |
| Altitude | 28 |
| Country | United States |
#2 Groton
Town in Connecticut
| Population | 11,256 |
| Coordinates | 42.6112000, -71.5745100 |
| Altitude | 101 |
| Country | United States |
End: Groton (-71.57451, 42.6112)
Estimated Travel Time
Distance: 51 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 03m |
| 40 mph (64.37 km/h) | 00h 47m |
| 50 mph (80.47 km/h) | 00h 37m |
| 60 mph (96.56 km/h) | 00h 31m |
| 70 mph (112.65 km/h) | 00h 27m |
| 80 mph (129 km/h) | 00h 23m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.12 | $4.62 | $9.24 |
| Mid-grade | $4.80 | $5.37 | $10.74 |
| Premium | $5.21 | $5.84 | $11.67 |
| Diesel | $6.28 | $7.04 | $14.07 |
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 · Nov 07, 2026