Distance between cities › USA › Missouri › Mountain Grove, MO › Distance from Mountain Grove to Flat River Book Hotels

Distance from Mountain Grove, MO to Flat River, MO

Distance

138 mi

Time

3 hours 23 mins

Gas Cost

$12 - $24

There are 107.89 miles from Mountain Grove to Flat River in northeast direction and 138 miles (222.09 kilometers) by car, following the MO 32 and MO 72 route.

Mountain Grove and Flat River are 3 hours 23 mins far apart, if you drive non-stop .

This is the fastest route from Mountain Grove, MO to Flat River, MO. The halfway point is Saint James, MO.

Mountain Grove, MO and Flat River, MO are in the same time zone (CDT). Current time in both locations is 1:58 am.

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Lowest Price Rental Cars in Mountain Grove, MO

Planning on renting a car to go from Mountain Grove, MO to Flat River, MO? Here there are some offers to rent a car in Mountain Grove, MO

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Mountain Grove »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 5.52 gallons of gas to cover the route between Mountain Grove, MO and Flat River, MO.

The estimated cost of gas to go from Mountain Grove to Flat River is $17.06.

During the route, an average car will release 108.19 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 $3.09 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Mountain Grove, MO and Flat River, MO

If you want to meet halfway between Mountain Grove, MO and Flat River, MO or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 37.990452 and -91.655724, or 37º 59' 25.6272" N, 91º 39' 20.6064" W. This location is 68.75 miles away from Mountain Grove, MO and Flat River, MO and it would take approximately 1 hour 41 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Saint James, MO, situated 87 miles from Mountain Grove, MO and 70 miles from Flat River, MO. It would take 1 hour 30 mins to go from Mountain Grove to Saint James and 1 hour 45 mins to go from Flat River to Saint James.