How far is Old Harbor, MA from Dennis, MA?
The driving distance from Old Harbor, MA to Dennis, MA is about 18.6 miles (30 km), with a travel time of about 00h 34m by car.
- The straight-line flight distance is about 14.4 miles (23.1 km).
- For a round trip, plan for roughly 01h 09m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM EST.
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 34m.
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 on Cape Cod, in Barnstable County in the state of Massachusetts
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 Old Harbor and Dennis.
Turn-by-Turn Driving Directions
Step-by-step road directions between Old Harbor and Dennis.
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1
Start on Monomoy NWR Nature Trail
1059 ft · 2 min · Monomoy NWR Nature Trail
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2
Keep slight left to continue on Access Trail
601 ft · 1 min · Access Trail
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3
Turn right onto Tisquantum Road
1706 ft · 1 min · Tisquantum Road
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4
Continue on Morris Island Road
1.3 km · 3 min · Morris Island Road
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5
Continue on Morris Island Road
1282 ft · 56 sec · Morris Island Road
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6
Continue on Main Street
2571 ft · 1 min · Main Street
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7
Continue on Main Street
1.2 km · 1 min · Main Street
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8
Enter the roundabout and take exit 2 toward Main Street
22 m · 1 sec · Main Street
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9
Exit the roundabout onto Main Street
1.1 km · 1 min · Main Street
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10
Turn right onto Old Queen Anne Road
1.2 mi · 2 min · Old Queen Anne Road
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11
Continue on Old Queen Anne Road
1.7 mi · 3 min · Old Queen Anne Road
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12
Continue on Queen Anne Road
1 km · 1 min · Queen Anne Road
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13
Enter the roundabout and take exit 2 toward Queen Anne Road
35 m · 3 sec · Queen Anne Road
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14
Exit the roundabout onto Queen Anne Road
2.3 mi · 4 min · Queen Anne Road
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15
Turn right onto Pleasant Lake Avenue
1586 ft · 39 sec · Pleasant Lake Avenue
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16
Take the ramp slight right toward US 6 West: Hyannis, Boston
1267 ft · 33 sec
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17
Merge slight left onto Mid Cape Highway
3.9 mi · 6 min · Mid Cape Highway
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18
Take the exit slight right toward MA 134 North: Dennis
1200 ft · 42 sec
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19
Turn straight onto East West Dennis Road
1244 ft · 35 sec · East West Dennis Road
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20
Turn left onto Bob Crowell Road
2016 ft · 44 sec · Bob Crowell Road
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21
At the end of the road, turn right onto Old Bass River Road
3.2 mi · 6 min · Old Bass River Road
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22
At the end of the road, turn left onto Route 6A
1205 ft · 28 sec · Route 6A
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23
Turn left
59 m · 14 sec
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24
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Old Harbor and Dennis.
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.
Mid Cape Highway
Merge slight left onto Mid Cape Highway
3.92 mi · 00h 06m
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.
Light Rain Likely leaving Old Harbor and Light Rain Likely near Dennis.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Old Harbor to Dennis?
The road trip is about 18.6 miles (30 km) and usually takes 00h 34m 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?
Harwich is a useful midpoint, sitting about 9.1 miles from Old Harbor and 9.6 miles from Dennis.
How much longer is the road route than the straight-line distance?
The direct path is about 14.4 miles (23.1 km), while the road route adds roughly 4.2 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 7:00 AM to 7:00 PM EST. If you want a more comfortable same-day return, try to leave by 7:20 PM EST.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $2.74 one way or $5.47 round trip. Estimated CO2 is about 5.9 kg one way.
What should you check before leaving?
Before you leave, expect Light Rain Likely around Old Harbor and Light Rain Likely near Dennis.
Stop Ideas Near Harwich
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 Harwich.
Route 128 station
South Station
Back Bay station
North Station
Flight Path Map
This map shows the direct air route between Old Harbor and Dennis. Straight-line distance: 14.35 mi (23.1 km).
#1 Old Harbor
Old Harbor is a place in Massachusetts, United States.
| Population | 0 |
| Coordinates | 41.6001100, -69.9827900 |
| Altitude | 2 |
| 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: Route 6a (-70.194729, 41.735379)
Estimated Travel Time
Distance: 30 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 37m |
| 40 mph (64.37 km/h) | 00h 27m |
| 50 mph (80.47 km/h) | 00h 22m |
| 60 mph (96.56 km/h) | 00h 18m |
| 70 mph (112.65 km/h) | 00h 15m |
| 80 mph (129 km/h) | 00h 13m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.14 | $2.74 | $5.47 |
| Mid-grade | $4.82 | $3.18 | $6.36 |
| Premium | $5.23 | $3.45 | $6.90 |
| Diesel | $6.30 | $4.16 | $8.32 |
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 06, 2026