How far is Foster, RI from Williamstown, MA?
The driving distance from Foster, RI to Williamstown, MA is about 134 miles (215.6 km), with a travel time of about 03h 10m by car.
- The straight-line flight distance is about 94.8 miles (152.5 km).
- For a round trip, plan for roughly 06h 20m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM EDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
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 03h 10m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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.
The most populous city in Hampshire County, Massachusetts.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Rain Showers
Chance Rain Showers then Partly Sunny
Driving Route Map
The map below follows the saved road route between Foster and Williamstown.
Turn-by-Turn Driving Directions
Step-by-step road directions between Foster and Williamstown.
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1
Start on Hartford Pike
6.4 mi · 10 min · Hartford Pike
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2
Take the ramp right
1604 ft · 39 sec
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3
Merge slight left
7.5 mi · 8 min
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4
Take the exit slight left toward CT 12: Grosvenordale
2912 ft · 1 min
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5
Continue on Riverside Drive
2.5 mi · 4 min · Riverside Drive
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6
Continue on Riverside Drive
2714 ft · 54 sec · Riverside Drive
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7
Keep slight left to continue on Quinebaug Road
3.8 mi · 7 min · Quinebaug Road
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8
Continue on Southbridge Road
2.6 mi · 4 min · Southbridge Road
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9
Continue on Ashland Avenue
1.4 mi · 3 min · Ashland Avenue
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10
Keep slight right to continue on Sandersdale Road
1014 ft · 20 sec · Sandersdale Road
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11
Continue on East Main Street
1.1 mi · 2 min · East Main Street
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12
Enter the roundabout and take exit 3 toward Southbridge Rotary
57 m · 3 sec · Main Street
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13
Exit the rotary onto Main Street
4.4 mi · 7 min · Main Street
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14
Turn sharp right onto Charlton Road
2580 ft · 1 min · Charlton Road
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15
Take the exit slight left
982 ft · 24 sec
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16
Merge slight left onto Wilbur Cross Highway
1.4 km · 1 min · Wilbur Cross Highway
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17
Take the exit slight left toward I 90 West: Springfield, Albany
1 km · 1 min
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18
Merge slight left onto Massachusetts Turnpike
67.6 mi · 1 hr 18 min · Massachusetts Turnpike
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19
Take the exit slight right toward US 20: Lee, Pittsfield
3137 ft · 1 min
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20
Keep slight right
115 m · 9 sec
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21
Merge slight left onto Housatonic Street
2865 ft · 1 min · Housatonic Street
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22
Continue on Park Street
648 ft · 18 sec · Park Street
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23
Turn slight right onto Main Street
2327 ft · 1 min · Main Street
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24
Turn left onto West Center Street
959 ft · 13 sec · West Center Street
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25
Continue on Laurel Street
1.2 mi · 2 min · Laurel Street
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26
Continue on Lee Road
1.2 mi · 2 min · Lee Road
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27
Continue on Veterans Memorial Highway
2.2 mi · 3 min · Veterans Memorial Highway
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28
Continue on Pittsfield Road
2.5 mi · 5 min · Pittsfield Road
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29
Continue on South Street
2.9 mi · 6 min · South Street
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30
Keep slight right to continue on Bank Row
926 ft · 26 sec · Bank Row
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31
Turn left onto First Street
1.4 km · 3 min · First Street
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32
Continue on North Street
2.6 mi · 6 min · North Street
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33
Continue on South Main Street
3.2 mi · 6 min · South Main Street
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34
Continue on Williamstown Road
3.8 mi · 5 min · Williamstown Road
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35
Continue on New Ashford Road
1.2 mi · 2 min · New Ashford Road
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36
Continue on Route 7
2.2 mi · 3 min · Route 7
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37
Continue on New Ashford Road
2.3 mi · 4 min · New Ashford Road
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38
Continue on Cold Spring Road
4.1 mi · 8 min · Cold Spring Road
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39
Continue on Main Street
153 m · 17 sec · Main Street
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40
Continue on Main Street
1538 ft · 45 sec · Main Street
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41
Turn right onto Spring Street
46 m · 4 sec · Spring Street
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42
Arrive at your destination
0 m · 1 sec · Spring Street
Car Route Details
A richer read on the saved driving route between Foster and Williamstown.
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.
Massachusetts Turnpike
Merge slight left onto Massachusetts Turnpike
67.6 mi · 01h 18m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Chance Rain Showers leaving Foster and Chance Rain Showers then Partly Sunny near Williamstown.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Foster to Williamstown?
The road trip is about 134 miles (215.6 km) and usually takes 03h 10m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Chicopee is a useful midpoint, sitting about 66.9 miles from Foster and 67 miles from Williamstown.
How much longer is the road route than the straight-line distance?
The direct path is about 94.8 miles (152.5 km), while the road route adds roughly 39.2 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 6:00 AM to 8:00 AM EDT. If you want a more comfortable same-day return, try to leave by 10:40 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $18.66 one way or $37.32 round trip. Estimated CO2 is about 42 kg one way.
What should you check before leaving?
Before you leave, expect Chance Rain Showers around Foster and Chance Rain Showers then Partly Sunny near Williamstown.
Stop Ideas Near Chicopee
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 Chicopee.
Springfield Union Station
Union Station
Amherst, Massachusetts
Windsor Locks
Flight Path Map
This map shows the direct air route between Foster and Williamstown. Straight-line distance: 94.75 mi (152.48 km).
#1 Foster
Town in Providence County, Rhode Island
| Population | 4,747 |
| Coordinates | 41.8537100, -71.7581200 |
| Altitude | 216 |
| Country | United States |
#2 Williamstown
Town in Massachusetts
| Population | 7,631 |
| Coordinates | 42.7120200, -73.2037200 |
| Altitude | 209 |
| Country | United States |
End: Williamstown (-73.20372, 42.71202)
Estimated Travel Time
Distance: 216 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 27m |
| 40 mph (64.37 km/h) | 03h 20m |
| 50 mph (80.47 km/h) | 02h 40m |
| 60 mph (96.56 km/h) | 02h 13m |
| 70 mph (112.65 km/h) | 01h 54m |
| 80 mph (129 km/h) | 01h 40m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $18.66 | $37.32 |
| Mid-grade | $4.46 | $21.08 | $42.16 |
| Premium | $4.86 | $22.98 | $45.96 |
| Diesel | $6.00 | $28.37 | $56.73 |
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 30, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.