Distance between cities › USA › Connecticut › Windham, CT › Distance from Windham to Sullivan Book Hotels

Distance from Windham, CT to Sullivan, WI

Distance

1,033 mi

Time

19 hours 54 mins

Gas Cost

$96 - $187

There are 842.47 miles from Windham to Sullivan in west direction and 1,033 miles (1,662.45 kilometers) by car, following the I-80 route.

Windham and Sullivan are 19 hours 54 mins far apart, if you drive non-stop .

This is the fastest route from Windham, CT to Sullivan, WI.

Please note the time difference between Windham, CT and Sullivan, WI is 1 hour. The current time in Windham is 6:37 am and the current time in Sullivan is 5:37 am.

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Lowest Price Rental Cars in Windham, CT

Planning on renting a car to go from Windham, CT to Sullivan, WI? Here there are some offers to rent a car in Windham, CT

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Windham »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 41.47 gallons of gas to cover the route between Windham, CT and Sullivan, WI.

The estimated cost of gas to go from Windham to Sullivan is $135.27.

During the route, an average car will release 812.42 pounds of CO₂ to the atmosphere. The carbon footprint would be 0.79 pounds of CO₂ per mile.

Average USA gas price used for calculation is $3.26 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Windham, CT and Sullivan, WI

If you want to meet halfway between Windham, CT and Sullivan, WI or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.185261 and -80.512329, or 41º 11' 6.9396" N, 80º 30' 44.3844" W. This location is 516.27 miles away from Windham, CT and Sullivan, WI and it would take approximately 9 hours 57 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Wheatland, PA, situated 516 miles from Windham, CT and 520 miles from Sullivan, WI. It would take 9 hours 54 mins to go from Windham to Wheatland and 10 hours 7 mins to go from Sullivan to Wheatland.