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

Distance from Webster, SD to Annawan, IL

Distance

641 mi

Time

11 hours 11 mins

Gas Cost

$60 - $116

There are 468.97 miles from Webster to Annawan in southeast direction and 641 miles (1,031.59 kilometers) by car, following the I-29 and US-81 route.

Webster and Annawan are 11 hours 11 mins far apart, if you drive non-stop .

This is the fastest route from Webster, SD to Annawan, IL. The halfway point is Rockwell City, IA.

Webster, SD and Annawan, IL are in the same time zone (CDT). Current time in both locations is 11:37 am.

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Lowest Price Rental Cars in Webster, SD

Planning on renting a car to go from Webster, SD to Annawan, 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 25.74 gallons of gas to cover the route between Webster, SD and Annawan, IL.

The estimated cost of gas to go from Webster to Annawan is $83.96.

During the route, an average car will release 504.30 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 Annawan, IL

If you want to meet halfway between Webster, SD and Annawan, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 42.449440 and -94.615128, or 42º 26' 57.984" N, 94º 36' 54.4608" W. This location is 320.47 miles away from Webster, SD and Annawan, IL and it would take approximately 5 hours 35 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Rockwell City, IA, situated 325 miles from Webster, SD and 297 miles from Annawan, IL. It would take 4 hours 48 mins to go from Webster to Rockwell City and 4 hours 35 mins to go from Annawan to Rockwell City.