How far is Westerly, RI from Portsmouth, RI?
The driving distance from Westerly, RI to Portsmouth, RI is about 46.5 miles (74.8 km), with a travel time of about 01h 06m by car.
- The straight-line flight distance is about 33.7 miles (54.2 km).
- For a round trip, plan for roughly 02h 13m 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 06m.
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.
Sunny
Sunny
Driving Route Map
The map below follows the saved road route between Westerly and Portsmouth.
Turn-by-Turn Driving Directions
Step-by-step road directions between Westerly and Portsmouth.
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1
Start on Grove Avenue
43 m · 11 sec · Grove Avenue
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2
Turn left onto Granite Street
2240 ft · 40 sec · Granite Street
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3
Continue on Granite Street
2430 ft · 1 min · Granite Street
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4
Continue on Franklin Street
1.5 km · 2 min · Franklin Street
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5
Continue on Post Road
11.4 mi · 13 min · Post Road
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6
Continue on Commodore Perry Highway
7.7 mi · 9 min · Commodore Perry Highway
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7
Continue on Post Road Freeway
1.1 km · 45 sec · Post Road Freeway
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8
Continue on Tower Hill Road
6.7 mi · 10 min · Tower Hill Road
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9
Keep slight right to continue on RI 138 East: Jamestown, Newport
9.6 mi · 13 min
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10
Turn right onto Admiral Kalbfus Road
956 ft · 44 sec · Admiral Kalbfus Road
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11
Turn left onto Girard Avenue
1.1 km · 2 min · Girard Avenue
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12
At the end of the road, turn right onto Coddington Highway
1.3 km · 1 min · Coddington Highway
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13
Turn left onto West Main Road
6.2 mi · 14 min · West Main Road
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14
Take the exit slight left toward RI 114 North: Bristol
1410 ft · 34 sec
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15
Turn straight onto RI 114 North: Bristol
81 m · 8 sec
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16
Turn right onto Freeborn Street
843 ft · 40 sec · Freeborn Street
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17
Continue on Freeborn Street
1724 ft · 1 min · Freeborn Street
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18
Turn left
26 m · 6 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 Westerly and Portsmouth.
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.
Post Road
Continue on Post Road
11.4 mi · 00h 13m
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.
Sunny leaving Westerly and Sunny near Portsmouth.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Westerly to Portsmouth?
The road trip is about 46.5 miles (74.8 km) and usually takes 01h 06m 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 23.2 miles from Westerly and 23.2 miles from Portsmouth.
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 12.8 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 4:16 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.47 one way or $12.94 round trip. Estimated CO2 is about 14.6 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Westerly and Sunny near Portsmouth.
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 Westerly and Portsmouth. Straight-line distance: 33.65 mi (54.16 km).
#1 Westerly
Town in Washington County, Rhode Island, United States
| Population | 22,328 |
| Coordinates | 41.3776000, -71.8272900 |
| Altitude | 11 |
| Country | United States |
#2 Portsmouth
Town in Newport County, Rhode Island, USA
| Population | 17,108 |
| Coordinates | 41.6023200, -71.2503300 |
| Altitude | 43 |
| Country | United States |
End: Freeborn Street (-71.250436, 41.602105)
Estimated Travel Time
Distance: 75 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 32m |
| 40 mph (64.37 km/h) | 01h 09m |
| 50 mph (80.47 km/h) | 00h 55m |
| 60 mph (96.56 km/h) | 00h 46m |
| 70 mph (112.65 km/h) | 00h 39m |
| 80 mph (129 km/h) | 00h 34m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $6.47 | $12.94 |
| Mid-grade | $4.46 | $7.31 | $14.62 |
| Premium | $4.86 | $7.97 | $15.93 |
| Diesel | $6.00 | $9.84 | $19.67 |
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 · May 04, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.