Distance between cities › USA › South Dakota › Webster, SD › Distance from Webster to River Forest Book Hotels

Distance from Webster, SD to River Forest, IL

Distance

643 mi

Time

12 hours 5 mins

Gas Cost

$60 - $117

There are 539.93 miles from Webster to River Forest in southeast direction and 643 miles (1,034.81 kilometers) by car, following the I-94 route.

Webster and River Forest are 12 hours 5 mins far apart, if you drive non-stop .

This is the fastest route from Webster, SD to River Forest, IL.

Webster, SD and River Forest, IL are in the same time zone (CDT). Current time in both locations is 10:02 am.

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Lowest Price Rental Cars in Webster, SD

Planning on renting a car to go from Webster, SD to River Forest, IL? Here there are some offers to rent a car in Webster, SD

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Webster »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 25.82 gallons of gas to cover the route between Webster, SD and River Forest, IL.

The estimated cost of gas to go from Webster to River Forest is $84.23.

During the route, an average car will release 505.90 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 Webster, SD and River Forest, IL

If you want to meet halfway between Webster, SD and River Forest, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 44.91838 and -92.064096, or 44º 55' 6.168" N, 92º 3' 50.7456" W. This location is 321.48 miles away from Webster, SD and River Forest, IL and it would take approximately 6 hours 2 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Knapp, WI, situated 304 miles from Webster, SD and 342 miles from River Forest, IL. It would take 5 hours 54 mins to go from Webster to Knapp and 6 hours 21 mins to go from River Forest to Knapp.