Distance between cities › USA › Connecticut › Cornwall, CT › Distance from Cornwall to Erwin Book Hotels

Distance from Cornwall, CT to Erwin, TN

Distance

739 mi

Time

14 hours 24 mins

Gas Cost

$69 - $134

There are 626.41 miles from Cornwall to Erwin in southwest direction and 739 miles (1,189.31 kilometers) by car, following the I-81 route.

Cornwall and Erwin are 14 hours 24 mins far apart, if you drive non-stop .

This is the fastest route from Cornwall, CT to Erwin, TN. The halfway point is Martinsburg, WV.

Cornwall, CT and Erwin, TN are in the same time zone (EDT). Current time in both locations is 12:07 am.

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Lowest Price Rental Cars in Cornwall, CT

Planning on renting a car to go from Cornwall, CT to Erwin, TN? Here there are some offers to rent a car in Cornwall, CT

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Cornwall »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 29.69 gallons of gas to cover the route between Cornwall, CT and Erwin, TN.

The estimated cost of gas to go from Cornwall to Erwin is $96.84.

During the route, an average car will release 581.64 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 Cornwall, CT and Erwin, TN

If you want to meet halfway between Cornwall, CT and Erwin, TN or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 39.438450 and -78.007553, or 39º 26' 18.42" N, 78º 0' 27.1908" W. This location is 369.61 miles away from Cornwall, CT and Erwin, TN and it would take approximately 7 hours 12 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Martinsburg, WV, situated 366 miles from Cornwall, CT and 376 miles from Erwin, TN. It would take 6 hours 14 mins to go from Cornwall to Martinsburg and 5 hours 45 mins to go from Erwin to Martinsburg.