How far is Somerville, MA from Harwich, MA?
The driving distance from Somerville, MA to Harwich, MA is about 85.7 miles (138 km), with a travel time of about 01h 57m by car.
- The straight-line flight distance is about 71.5 miles (115 km).
- For a round trip, plan for roughly 03h 55m 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 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.
County seat town in Plymouth County, Massachusetts, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Light Rain then Chance Rain Showers
Rain Showers Likely
Driving Route Map
The map below follows the saved road route between Somerville and Harwich.
Turn-by-Turn Driving Directions
Step-by-step road directions between Somerville and Harwich.
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1
Start on the route
50 m · 18 sec
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2
Turn left onto Highland Avenue
2121 ft · 2 min · Highland Avenue
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3
Continue on Medford Street
134 m · 13 sec · Medford Street
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4
Turn left onto McGrath Highway
3180 ft · 1 min · McGrath Highway
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5
Take the exit slight right toward I 93, MA 38: Medford, Boston
63 m · 6 sec
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6
Keep slight right to continue on I 93 South: Boston
96 m · 9 sec
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7
Turn slight right onto I 93 South: Boston
734 ft · 18 sec
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8
Keep slight left to continue on I 93 South: Boston
1599 ft · 39 sec
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9
Merge slight left
12.5 mi · 18 min
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10
Keep slight left to continue on MA 3 South: Cape Cod
30.9 mi · 39 min
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11
Keep slight right to continue on Pilgrims Highway
12 mi · 15 min · Pilgrims Highway
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12
Continue on Pilgrim Highway
930 ft · 20 sec · Pilgrim Highway
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13
Continue on Sagamore Bridge
2134 ft · 46 sec · Sagamore Bridge
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14
Continue on Mid Cape Highway
26.6 mi · 37 min · Mid Cape Highway
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15
Take the exit slight right toward MA 124: Harwich, Brewster
1250 ft · 36 sec
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16
Keep slight right to continue on MA 124 South: Harwich, Harwich Port
58 m · 6 sec
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17
Turn straight onto Pleasant Lake Avenue
1.3 mi · 3 min · Pleasant Lake Avenue
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18
At the end of the road, turn left onto Main Street
5 m · 1 sec · Main Street
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19
Arrive at your destination
0 m · 1 sec · Main Street
Car Route Details
A richer read on the saved driving route between Somerville and Harwich.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
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.
Slight Chance Light Rain then Chance Rain Showers leaving Somerville and Rain Showers Likely near Harwich.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Somerville to Harwich?
The road trip is about 85.7 miles (138 km) and usually takes 01h 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?
Plymouth is a useful midpoint, sitting about 42.9 miles from Somerville and 42.9 miles from Harwich.
How much longer is the road route than the straight-line distance?
The direct path is about 71.5 miles (115 km), while the road route adds roughly 14.2 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 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 2:34 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $11.79 one way or $23.57 round trip. Estimated CO2 is about 26.9 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Light Rain then Chance Rain Showers around Somerville and Rain Showers Likely near Harwich.
Stop Ideas Near Plymouth
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 Plymouth.
Route 128 station
South Station
Back Bay station
North Station
Flight Path Map
This map shows the direct air route between Somerville and Harwich. Straight-line distance: 71.47 mi (115.02 km).
#1 Somerville
A city in Middlesex County, Massachusetts.
| Population | 80,935 |
| Coordinates | 42.3876000, -71.0995000 |
| Altitude | 28 |
| Country | United States |
#2 Harwich
Town on Cape Cod, in Barnstable County in the state of Massachusetts
| Population | 12,144 |
| Coordinates | 41.6862200, -70.0758500 |
| Altitude | 17 |
| Country | United States |
End: Harwich (-70.07585, 41.68622)
Estimated Travel Time
Distance: 138 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 51m |
| 40 mph (64.37 km/h) | 02h 08m |
| 50 mph (80.47 km/h) | 01h 42m |
| 60 mph (96.56 km/h) | 01h 25m |
| 70 mph (112.65 km/h) | 01h 13m |
| 80 mph (129 km/h) | 01h 04m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $11.79 | $23.57 |
| Mid-grade | $4.40 | $13.32 | $26.65 |
| Premium | $4.80 | $14.54 | $29.08 |
| Diesel | $4.49 | $13.60 | $27.20 |
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.