Distance between cities › USA › Missouri › Saint Peters, MO › Distance from Saint Peters to Ballwin Book Hotels

Distance from Saint Peters, MO to Ballwin, MO

Distance

21 mi

Time

36 minutes

Gas Cost

$2 - $4

There are 14.04 miles from Saint Peters to Ballwin in southeast direction and 21 miles (33.80 kilometers) by car, following the MO 141 route.

Saint Peters and Ballwin are 36 minutes far apart, if you drive non-stop .

This is the fastest route from Saint Peters, MO to Ballwin, MO.

Saint Peters, MO and Ballwin, MO are in the same time zone (CDT). Current time in both locations is 7:10 am.

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Lowest Price Rental Cars in Saint Peters, MO

Planning on renting a car to go from Saint Peters, MO to Ballwin, MO? Here there are some offers to rent a car in Saint Peters, MO

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Saint Peters »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 0.84 gallons of gas to cover the route between Saint Peters, MO and Ballwin, MO.

The estimated cost of gas to go from Saint Peters to Ballwin is $2.79.

During the route, an average car will release 16.53 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 $3.31 per gallon of regular gas. Price last updated on March 18, 2026.
Read more about our CO₂ calculation.

Recommended hotels in Ballwin, MO

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Halfway Point Between Saint Peters, MO and Ballwin, MO

If you want to meet halfway between Saint Peters, MO and Ballwin, MO or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 38.726810 and -90.516212, or 38º 43' 36.516" N, 90º 30' 58.3632" W. This location is 10.50 miles away from Saint Peters, MO and Ballwin, MO and it would take approximately 18 minutes to reach the halfway point from both locations.