Distance between cities › USA › Ohio › Charm, OH › Distance from Charm to Harmon Book Hotels

Distance from Charm, OH to Harmon, OK

Distance

1,117 mi

Time

21 hours 15 mins

Gas Cost

$104 - $202

There are 1,007.46 miles from Charm to Harmon in southwest direction and 1,117 miles (1,797.64 kilometers) by car, following the I-44 and US-50 route.

Charm and Harmon are 21 hours 15 mins far apart, if you drive non-stop .

This is the fastest route from Charm, OH to Harmon, OK.

Please note the time difference between Charm, OH and Harmon, OK is 1 hour. The current time in Charm is 2:10 pm and the current time in Harmon is 1:10 pm.

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Lowest Price Rental Cars in Charm, OH

Planning on renting a car to go from Charm, OH to Harmon, OK? Here there are some offers to rent a car in Charm, OH

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Charm »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 44.84 gallons of gas to cover the route between Charm, OH and Harmon, OK.

The estimated cost of gas to go from Charm to Harmon is $146.27.

During the route, an average car will release 878.50 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 Charm, OH and Harmon, OK

If you want to meet halfway between Charm, OH and Harmon, OK or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 38.487983 and -90.804384, or 38º 29' 16.7388" N, 90º 48' 15.7824" W. This location is 558.26 miles away from Charm, OH and Harmon, OK and it would take approximately 10 hours 37 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Gray Summit, MO, situated 547 miles from Charm, OH and 571 miles from Harmon, OK. It would take 10 hours 38 mins to go from Charm to Gray Summit and 10 hours 38 mins to go from Harmon to Gray Summit.