How far is Waltham, MA from South Yarmouth, MA?
The driving distance from Waltham, MA to South Yarmouth, MA is about 85.1 miles (137 km), with a travel time of about 01h 58m by car.
- The straight-line flight distance is about 72.9 miles (117.3 km).
- For a round trip, plan for roughly 03h 56m 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 58m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Coastal town in Plymouth County, Massachusetts, United States
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 Waltham and South Yarmouth.
Turn-by-Turn Driving Directions
Step-by-step road directions between Waltham and South Yarmouth.
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1
Start on Main Street
2.8 mi · 6 min · Main Street
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2
Turn slight right
77 m · 9 sec
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3
Turn straight onto Galen Street
2268 ft · 44 sec · Galen Street
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4
Continue on Centre Street
152 m · 19 sec · Centre Street
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5
Continue on Centre Street
97 m · 12 sec · Centre Street
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6
Turn straight onto Washington Street
693 ft · 28 sec · Washington Street
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7
Turn slight left onto Centre Street
694 ft · 22 sec · Centre Street
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8
Continue on Centre Street
21 m · 3 sec · Centre Street
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9
Take the ramp slight left toward Centre Street
653 ft · 24 sec · Centre Street
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10
Continue on Washington Street
87 m · 7 sec · Washington Street
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11
Keep slight left to continue on Washington Street
92 m · 6 sec · Washington Street
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12
Continue on Saint James Street
55 m · 4 sec · Saint James Street
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13
Take the ramp slight right toward I 90 East: Boston
1159 ft · 28 sec
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14
Merge slight left onto Massachusetts Turnpike
6.2 mi · 9 min · Massachusetts Turnpike
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15
Take the exit slight left toward I 93: South Station, Concord New Hampshire, Quincy
156 m · 13 sec
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16
Keep slight left to continue on I 93 South, I 93 North: Quincy, Concord New Hampshire
138 m · 11 sec
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17
Keep slight left to continue on I 93 South: Quincy
2957 ft · 1 min
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18
Merge slight right onto John F. Fitzgerald Expressway
1.2 km · 1 min · John F. Fitzgerald Expressway
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19
Continue on Southeast Expressway
8 mi · 11 min · Southeast Expressway
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20
Keep slight left to continue on MA 3 South: Cape Cod
30.9 mi · 39 min
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21
Keep slight right to continue on Pilgrims Highway
12 mi · 15 min · Pilgrims Highway
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22
Continue on Pilgrim Highway
930 ft · 20 sec · Pilgrim Highway
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23
Continue on Sagamore Bridge
2134 ft · 46 sec · Sagamore Bridge
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24
Continue on Mid Cape Highway
19.3 mi · 26 min · Mid Cape Highway
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25
Take the exit slight right toward Yarmouth, Dennis
1475 ft · 50 sec
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26
Keep slight right to continue on Station Avenue, Bass River
62 m · 5 sec
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27
Turn straight onto Station Avenue
2.1 mi · 4 min · Station Avenue
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28
Turn right onto North Main Street
78 m · 10 sec · North Main Street
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29
Turn left onto Bridge Street
27 m · 2 sec · Bridge Street
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30
Arrive at your destination
0 m · 1 sec · Bridge Street
Car Route Details
A richer read on the saved driving route between Waltham and South Yarmouth.
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.
Rain Showers Likely leaving Waltham and Rain Showers Likely near South Yarmouth.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Waltham to South Yarmouth?
The road trip is about 85.1 miles (137 km) and usually takes 01h 58m 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?
Kingston is a useful midpoint, sitting about 42.5 miles from Waltham and 42.6 miles from South Yarmouth.
How much longer is the road route than the straight-line distance?
The direct path is about 72.9 miles (117.3 km), while the road route adds roughly 12.2 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 $11.67 one way or $23.34 round trip. Estimated CO2 is about 26.7 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers Likely around Waltham and Rain Showers Likely near South Yarmouth.
Stop Ideas Near Kingston
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 Kingston.
Route 128 station
South Station
Back Bay station
North Station
Flight Path Map
This map shows the direct air route between Waltham and South Yarmouth. Straight-line distance: 72.9 mi (117.32 km).
#1 Waltham
A city in Middlesex County, Massachusetts.
| Population | 62,069 |
| Coordinates | 42.3764900, -71.2356100 |
| Altitude | 20 |
| Country | United States |
#2 South Yarmouth
Census-designated place in Barnstable County, Massachusetts
| Population | 11,092 |
| Coordinates | 41.6667800, -70.1847400 |
| Altitude | 6 |
| Country | United States |
End: South Yarmouth (-70.18474, 41.66678)
Estimated Travel Time
Distance: 137 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 50m |
| 40 mph (64.37 km/h) | 02h 07m |
| 50 mph (80.47 km/h) | 01h 42m |
| 60 mph (96.56 km/h) | 01h 25m |
| 70 mph (112.65 km/h) | 01h 12m |
| 80 mph (129 km/h) | 01h 03m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $11.67 | $23.34 |
| Mid-grade | $4.40 | $13.19 | $26.38 |
| Premium | $4.80 | $14.40 | $28.79 |
| Diesel | $4.49 | $13.46 | $26.93 |
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.