How far is Somerville, MA from Marstons Mills, MA?
The driving distance from Somerville, MA to Marstons Mills, MA is about 71.8 miles (115.5 km), with a travel time of about 01h 39m by car.
- The straight-line flight distance is about 61.5 miles (99 km).
- For a round trip, plan for roughly 03h 19m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM EDT.
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 01h 39m.
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.
Census-designated place in Plymouth County, Massachusetts
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers Likely
Rain Showers Likely
Driving Route Map
The map below follows the saved road route between Somerville and Marstons Mills.
Turn-by-Turn Driving Directions
Step-by-step road directions between Somerville and Marstons Mills.
-
1
Start on the route
50 m · 18 sec
-
2
Turn left onto Highland Avenue
2121 ft · 2 min · Highland Avenue
-
3
Continue on Medford Street
134 m · 13 sec · Medford Street
-
4
Turn left onto McGrath Highway
3180 ft · 1 min · McGrath Highway
-
5
Take the exit slight right toward I 93, MA 38: Medford, Boston
63 m · 6 sec
-
6
Keep slight right to continue on I 93 South: Boston
96 m · 9 sec
-
7
Turn slight right onto I 93 South: Boston
734 ft · 18 sec
-
8
Keep slight left to continue on I 93 South: Boston
1599 ft · 39 sec
-
9
Merge slight left
12.5 mi · 18 min
-
10
Keep slight left to continue on MA 3 South: Cape Cod
30.9 mi · 39 min
-
11
Keep slight right to continue on Pilgrims Highway
12 mi · 15 min · Pilgrims Highway
-
12
Continue on Pilgrim Highway
930 ft · 20 sec · Pilgrim Highway
-
13
Continue on Sagamore Bridge
2134 ft · 46 sec · Sagamore Bridge
-
14
Continue on Mid Cape Highway
10.1 mi · 14 min · Mid Cape Highway
-
15
Take the exit slight right toward MA 149: Marston Mills, West Barnstable
1041 ft · 36 sec
-
16
Enter the roundabout and take exit 1 toward Prospect Street
16 m · 1 sec · Prospect Street
-
17
Exit the roundabout onto Prospect Street
909 ft · 18 sec · Prospect Street
-
18
Keep slight right to continue on Prospect Street
1.1 mi · 2 min · Prospect Street
-
19
Enter the roundabout and take exit 2 toward Cotuit Road
16 m · 1 sec · Cotuit Road
-
20
Exit the roundabout onto Cotuit Road
2.2 mi · 4 min · Cotuit Road
-
21
Turn right onto River Road
1432 ft · 1 min · River Road
-
22
Arrive at your destination
0 m · 1 sec · River Road
Car Route Details
A richer read on the saved driving route between Somerville and Marstons Mills.
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.
MA 3 South
Keep slight left to continue on MA 3 South: Cape Cod
30.9 mi · 00h 39m
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.
Rain Showers Likely leaving Somerville and Rain Showers Likely near Marstons Mills.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Somerville to Marstons Mills?
The road trip is about 71.8 miles (115.5 km) and usually takes 01h 39m 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?
South Duxbury is a useful midpoint, sitting about 35.9 miles from Somerville and 35.9 miles from Marstons Mills.
How much longer is the road route than the straight-line distance?
The direct path is about 61.5 miles (99 km), while the road route adds roughly 10.3 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 EDT. If you want a more comfortable same-day return, try to leave by 3:10 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $9.84 one way or $19.68 round trip. Estimated CO2 is about 22.5 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers Likely around Somerville and Rain Showers Likely near Marstons Mills.
Stop Ideas Near South Duxbury
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 South Duxbury.
Route 128 station
Back Bay station
South Station
North Station
Flight Path Map
This map shows the direct air route between Somerville and Marstons Mills. Straight-line distance: 61.52 mi (99 km).
#1 Somerville
A city in Middlesex County, Massachusetts.
| Population | 80,935 |
| Coordinates | 42.3876000, -71.0995000 |
| Altitude | 28 |
| Country | United States |
#2 Marstons Mills
City in Barnstable County, Massachusetts, United States of America
| Population | 8,017 |
| Coordinates | 41.6562200, -70.4161400 |
| Altitude | 13 |
| Country | United States |
End: Marstons Mills (-70.41614, 41.65622)
Estimated Travel Time
Distance: 116 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 23m |
| 40 mph (64.37 km/h) | 01h 47m |
| 50 mph (80.47 km/h) | 01h 26m |
| 60 mph (96.56 km/h) | 01h 11m |
| 70 mph (112.65 km/h) | 01h 01m |
| 80 mph (129 km/h) | 00h 53m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $9.84 | $19.68 |
| Mid-grade | $4.40 | $11.12 | $22.25 |
| Premium | $4.80 | $12.14 | $24.28 |
| Diesel | $4.49 | $11.35 | $22.71 |
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 · Apr 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.