How far is Cambridge, MA from Dennis, MA?
The driving distance from Cambridge, MA to Dennis, MA is about 80.2 miles (129 km), with a travel time of about 01h 54m by car.
- The straight-line flight distance is about 64.4 miles (103.6 km).
- For a round trip, plan for roughly 03h 48m 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 54m.
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.
Partly Sunny
Chance T-storms
Driving Route Map
The map below follows the saved road route between Cambridge and Dennis.
Turn-by-Turn Driving Directions
Step-by-step road directions between Cambridge and Dennis.
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1
Start on Leonard Avenue
81 m · 17 sec · Leonard Avenue
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2
Turn left onto Cambridge Street
1391 ft · 1 min · Cambridge Street
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3
Continue on Cambridge Street
1.3 mi · 4 min · Cambridge Street
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4
Merge slight left onto Monsignor O'Brien Highway
755 ft · 23 sec · Monsignor O'Brien Highway
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5
Continue on Charles River Dam Road
1832 ft · 1 min · Charles River Dam Road
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6
Take the exit straight toward I 93 South: Quincy, Logan Airport
2427 ft · 1 min
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7
Merge slight left onto John F. Fitzgerald Expressway
2.7 mi · 4 min · John F. Fitzgerald Expressway
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8
Continue on Southeast Expressway
8 mi · 11 min · Southeast Expressway
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9
Keep slight left to continue on MA 3 South: Cape Cod
30.9 mi · 39 min
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10
Keep slight right to continue on Pilgrims Highway
12 mi · 15 min · Pilgrims Highway
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11
Continue on Pilgrim Highway
930 ft · 20 sec · Pilgrim Highway
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12
Continue on Sagamore Bridge
2134 ft · 46 sec · Sagamore Bridge
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13
Continue on Mid Cape Highway
17.3 mi · 24 min · Mid Cape Highway
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14
Take the exit slight right toward Yarmouthport, West Yarmouth
967 ft · 27 sec
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15
Turn right onto Willow Street
1.3 mi · 3 min · Willow Street
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16
At the end of the road, turn right onto Main Street
3.4 mi · 6 min · Main Street
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17
Continue on Route 6A
1.2 mi · 2 min · Route 6A
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18
Turn right
59 m · 14 sec
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19
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Cambridge and Dennis.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
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.
Partly Sunny leaving Cambridge and Chance T-storms near Dennis.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Cambridge to Dennis?
The road trip is about 80.2 miles (129 km) and usually takes 01h 54m 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?
North Plymouth is a useful midpoint, sitting about 40.1 miles from Cambridge and 40.1 miles from Dennis.
How much longer is the road route than the straight-line distance?
The direct path is about 64.4 miles (103.6 km), while the road route adds roughly 15.8 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 2:42 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $11.01 one way or $22.02 round trip. Estimated CO2 is about 25.2 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Cambridge and Chance T-storms near Dennis.
Stop Ideas Near North 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 North Plymouth.
Route 128 station
South Station
Back Bay station
North Station
Flight Path Map
This map shows the direct air route between Cambridge and Dennis. Straight-line distance: 64.35 mi (103.56 km).
#1 Cambridge
The most populous city in Middlesex County, Massachusetts.
| Population | 119,192 |
| Coordinates | 42.3751000, -71.1056100 |
| Altitude | 5 |
| Country | United States |
#2 Dennis
Town in Barnstable County, Massachusetts, United States
| Population | 13,890 |
| Coordinates | 41.7353900, -70.1939100 |
| Altitude | 5 |
| Country | United States |
End: Dennis (-70.19391, 41.73539)
Estimated Travel Time
Distance: 129 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 40m |
| 40 mph (64.37 km/h) | 02h 00m |
| 50 mph (80.47 km/h) | 01h 36m |
| 60 mph (96.56 km/h) | 01h 20m |
| 70 mph (112.65 km/h) | 01h 08m |
| 80 mph (129 km/h) | 00h 59m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $11.01 | $22.02 |
| Mid-grade | $4.40 | $12.44 | $24.89 |
| Premium | $4.80 | $13.58 | $27.16 |
| Diesel | $4.49 | $12.70 | $25.40 |
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.