Distance between cities › USA › Ohio › Troy, OH › Distance from Troy to Gray Summit Book Hotels

Distance from Troy, OH to Gray Summit, MO

Distance

401 mi

Time

7 hours 39 mins

Gas Cost

$37 - $71

There are 369.53 miles from Troy to Gray Summit in southwest direction and 401 miles (645.35 kilometers) by car, following the I-70 route.

Troy and Gray Summit are 7 hours 39 mins far apart, if you drive non-stop .

This is the fastest route from Troy, OH to Gray Summit, MO.

Please note the time difference between Troy, OH and Gray Summit, MO is 1 hour. The current time in Troy is 5:49 pm and the current time in Gray Summit is 4:49 pm.

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Lowest Price Rental Cars in Troy, OH

Planning on renting a car to go from Troy, OH to Gray Summit, MO? Here there are some offers to rent a car in Troy, OH

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Troy »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 16.10 gallons of gas to cover the route between Troy, OH and Gray Summit, MO.

The estimated cost of gas to go from Troy to Gray Summit is $51.60.

During the route, an average car will release 315.51 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 $3.20 per gallon of regular gas. Price last updated on March 11, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Troy, OH and Gray Summit, MO

If you want to meet halfway between Troy, OH and Gray Summit, MO or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 39.44829 and -87.476547, or 39º 26' 53.844" N, 87º 28' 35.5692" W. This location is 200.50 miles away from Troy, OH and Gray Summit, MO and it would take approximately 3 hours 49 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is West Terre Haute, IN, situated 201 miles from Troy, OH and 204 miles from Gray Summit, MO. It would take 3 hours 55 mins to go from Troy to West Terre Haute and 3 hours 51 mins to go from Gray Summit to West Terre Haute.