Distance between cities › USA › Missouri › Williamstown, MO › Distance from Williamstown to Saint Augustine Book Hotels

Distance from Williamstown, MO to Saint Augustine, IL

Distance

112 mi

Time

2 hours 49 mins

Gas Cost

$10 - $20

There are 80.08 miles from Williamstown to Saint Augustine in northeast direction and 112 miles (180.25 kilometers) by car, following the US-136 and IL 110 and IL 336 route.

Williamstown and Saint Augustine are 2 hours 49 mins far apart, if you drive non-stop .

This is the fastest route from Williamstown, MO to Saint Augustine, IL.

Williamstown, MO and Saint Augustine, IL are in the same time zone (CDT). Current time in both locations is 11:45 am.

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Lowest Price Rental Cars in Williamstown, MO

Planning on renting a car to go from Williamstown, MO to Saint Augustine, IL? Here there are some offers to rent a car in Williamstown, MO

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Williamstown »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 4.50 gallons of gas to cover the route between Williamstown, MO and Saint Augustine, IL.

The estimated cost of gas to go from Williamstown to Saint Augustine is $14.69.

During the route, an average car will release 88.25 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 Williamstown, MO and Saint Augustine, IL

If you want to meet halfway between Williamstown, MO and Saint Augustine, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 40.415223 and -91.063475, or 40º 24' 54.8028" N, 91º 3' 48.51" W. This location is 56.08 miles away from Williamstown, MO and Saint Augustine, IL and it would take approximately 1 hour 24 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Carthage, IL, situated 52 miles from Williamstown, MO and 61 miles from Saint Augustine, IL. It would take 1 hour 28 mins to go from Williamstown to Carthage and 1 hour 20 mins to go from Saint Augustine to Carthage.