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Distance from Calhoun, MO to IAD Airport

Distance

1,009 mi

Time

19 hours 47 mins

Gas Cost

$94 - $183

Helpful Inaccurate

There are 871.30 miles from Calhoun to Washington Dulles International Airport (IAD) in east direction and 1,009 miles (1,623.83 kilometers) by car, following the I-70 route.

Calhoun and IAD Airport are 19 hours 47 mins far apart, if you drive non-stop .

This is the fastest route from Calhoun, MO to IAD Airport. The halfway point is Straughn, IN.

Please note the time difference between Calhoun, MO and IAD Airport is 1 hour. The current time in Calhoun is 6:37 am and the current time in IAD Airport is 7:37 am.

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Lowest Price Rental Cars in Calhoun, MO

Planning on renting a car to go from Calhoun, MO to IAD Airport? Here there are some offers to rent a car in Calhoun, MO

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Calhoun »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 40.52 gallons of gas to cover the route between Calhoun, MO and IAD Airport.

The estimated cost of gas to go from Calhoun to IAD Airport is $132.18.

During the route, an average car will release 793.91 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 Calhoun, MO and IAD Airport

If you want to meet halfway between Calhoun, MO and IAD Airport or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 39.828972 and -85.269402, or 39º 49' 44.2992" N, 85º 16' 9.8472" W. This location is 504.50 miles away from Calhoun, MO and IAD Airport and it would take approximately 9 hours 53 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Straughn, IN, situated 508 miles from Calhoun, MO and 539 miles from IAD Airport. It would take 8 hours 9 mins to go from Calhoun to Straughn and 8 hours 25 mins to go from IAD to Straughn.