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

Distance from Webster, SD to Allerton, IL

Distance

817 mi

Time

14 hours 33 mins

Gas Cost

$76 - $148

There are 613.84 miles from Webster to Allerton in southeast direction and 817 miles (1,314.83 kilometers) by car, following the I-29 and US-81 route.

Webster and Allerton are 14 hours 33 mins far apart, if you drive non-stop .

This is the fastest route from Webster, SD to Allerton, IL. The halfway point is Iowa Falls, IA.

Webster, SD and Allerton, IL are in the same time zone (CDT). Current time in both locations is 8:38 am.

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Lowest Price Rental Cars in Webster, SD

Planning on renting a car to go from Webster, SD to Allerton, 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 32.83 gallons of gas to cover the route between Webster, SD and Allerton, IL.

The estimated cost of gas to go from Webster to Allerton is $107.08.

During the route, an average car will release 643.16 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 Allerton, IL

If you want to meet halfway between Webster, SD and Allerton, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 42.459976 and -93.179848, or 42º 27' 35.9136" N, 93º 10' 47.4528" W. This location is 408.70 miles away from Webster, SD and Allerton, IL and it would take approximately 7 hours 16 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Iowa Falls, IA, situated 397 miles from Webster, SD and 403 miles from Allerton, IL. It would take 5 hours 54 mins to go from Webster to Iowa Falls and 6 hours 20 mins to go from Allerton to Iowa Falls.