Distance between cities › USA › Illinois › Sims, IL › Distance from Sims to Allen Book Hotels

Distance from Sims, IL to Allen, SD

Distance

931 mi

Time

18 hours 20 mins

Gas Cost

$87 - $169

There are 777.22 miles from Sims to Allen in northwest direction and 931 miles (1,498.30 kilometers) by car, following the I-70 route.

Sims and Allen are 18 hours 20 mins far apart, if you drive non-stop .

This is the fastest route from Sims, IL to Allen, SD. The halfway point is Manawa, IA.

Please note the time difference between Sims, IL and Allen, SD is 1 hour. The current time in Sims is 5:13 am and the current time in Allen is 4:13 am.

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Lowest Price Rental Cars in Sims, IL

Planning on renting a car to go from Sims, IL to Allen, SD? Here there are some offers to rent a car in Sims, IL

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Sims »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 37.39 gallons of gas to cover the route between Sims, IL and Allen, SD.

The estimated cost of gas to go from Sims to Allen is $121.98.

During the route, an average car will release 732.60 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 Sims, IL and Allen, SD

If you want to meet halfway between Sims, IL and Allen, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.149021 and -95.822411, or 41º 8' 56.4756" N, 95º 49' 20.6796" W. This location is 465.54 miles away from Sims, IL and Allen, SD and it would take approximately 9 hours 10 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Manawa, IA, situated 529 miles from Sims, IL and 509 miles from Allen, SD. It would take 8 hours 25 mins to go from Sims to Manawa and 7 hours 56 mins to go from Allen to Manawa.

Major City Closest to Halfway Point

The major city closest to the halfway point between Sims, IL and Allen, SD is Omaha, NE, situated 535 miles from Sims, IL and 508 miles from Allen, SD. It would take 8 hours 29 mins to go from Sims to and 7 hours 49 mins to go from Allen to Omaha.