How far is Portsmouth, RI from Westerly, RI?
The driving distance from Portsmouth, RI to Westerly, RI is about 46.9 miles (75.4 km), with a travel time of about 01h 07m by car.
- The straight-line flight distance is about 33.7 miles (54.2 km).
- For a round trip, plan for roughly 02h 14m 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 07m.
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.
Town in Washington County, Rhode Island, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Patchy Fog
Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Portsmouth and Westerly.
Turn-by-Turn Driving Directions
Step-by-step road directions between Portsmouth and Westerly.
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1
Start on the route
26 m · 8 sec
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2
Turn right onto Freeborn Street
1724 ft · 1 min · Freeborn Street
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3
At the end of the road, turn left onto Freeborn Street
843 ft · 41 sec · Freeborn Street
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4
Turn left
104 m · 6 sec
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5
Take the ramp straight
6.4 mi · 15 min
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6
Turn right onto Coddington Highway
1.5 km · 1 min · Coddington Highway
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7
Continue on JT Connell Highway
1 km · 2 min · JT Connell Highway
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8
Enter the roundabout and take exit 2 toward JT Connell Highway
42 m · 2 sec · JT Connell Highway
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9
Exit the roundabout onto JT Connell Highway
1411 ft · 31 sec · JT Connell Highway
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10
Take the ramp left
706 ft · 17 sec
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11
Merge slight left onto RI 138: Jamestown
16.2 mi · 24 min
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12
Continue on Post Road Freeway
3157 ft · 41 sec · Post Road Freeway
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13
Continue on Commodore Perry Highway
7.7 mi · 9 min · Commodore Perry Highway
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14
Continue on Post Road
11.3 mi · 14 min · Post Road
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15
Continue on Franklin Street
1.5 km · 2 min · Franklin Street
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16
Continue on Granite Street
1.4 km · 2 min · Granite Street
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17
Turn right onto Grove Avenue
43 m · 2 sec · Grove Avenue
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18
Arrive at your destination
0 m · 1 sec · Grove Avenue
Car Route Details
A richer read on the saved driving route between Portsmouth and Westerly.
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.
RI 138
Merge slight left onto RI 138: Jamestown
16.2 mi · 00h 24m
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.
Patchy Fog leaving Portsmouth and Chance Rain Showers near Westerly.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Portsmouth to Westerly?
The road trip is about 46.9 miles (75.4 km) and usually takes 01h 07m 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?
Narragansett is a useful midpoint, sitting about 23.3 miles from Portsmouth and 23.5 miles from Westerly.
How much longer is the road route than the straight-line distance?
The direct path is about 33.7 miles (54.2 km), while the road route adds roughly 13.2 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 4:16 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.51 one way or $13.02 round trip. Estimated CO2 is about 14.7 kg one way.
What should you check before leaving?
Before you leave, expect Patchy Fog around Portsmouth and Chance Rain Showers near Westerly.
Stop Ideas Near Narragansett
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 Narragansett.
Kingston station
Westerly station
Providence station
Foxwoods Casino, Connecticut
Flight Path Map
This map shows the direct air route between Portsmouth and Westerly. Straight-line distance: 33.65 mi (54.16 km).
#1 Portsmouth
Town in Newport County, Rhode Island, USA
| Population | 17,108 |
| Coordinates | 41.6023200, -71.2503300 |
| Altitude | 43 |
| Country | United States |
#2 Westerly
Town in Washington County, Rhode Island, United States
| Population | 22,328 |
| Coordinates | 41.3776000, -71.8272900 |
| Altitude | 11 |
| Country | United States |
End: Grove Avenue (-71.827247, 41.377583)
Estimated Travel Time
Distance: 75 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 33m |
| 40 mph (64.37 km/h) | 01h 10m |
| 50 mph (80.47 km/h) | 00h 56m |
| 60 mph (96.56 km/h) | 00h 46m |
| 70 mph (112.65 km/h) | 00h 40m |
| 80 mph (129 km/h) | 00h 35m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $6.51 | $13.02 |
| Mid-grade | $4.46 | $7.35 | $14.71 |
| Premium | $4.86 | $8.02 | $16.03 |
| Diesel | $6.00 | $9.90 | $19.79 |
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 Rhode Island · 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.