Distance between cities › USA › South Dakota › Dell Rapids, SD › Distance from Dell Rapids to O Fallon Book Hotels

Distance from Dell Rapids, SD to O Fallon, IL

Distance

650 mi

Time

11 hours 57 mins

Gas Cost

$61 - $118

There are 505.15 miles from Dell Rapids to O Fallon in southeast direction and 650 miles (1,046.07 kilometers) by car, following the I-29 route.

Dell Rapids and O Fallon are 11 hours 57 mins far apart, if you drive non-stop .

This is the fastest route from Dell Rapids, SD to O Fallon, IL. The halfway point is Dearborn, MO.

Dell Rapids, SD and O Fallon, IL are in the same time zone (CDT). Current time in both locations is 6:11 am.

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Lowest Price Rental Cars in Dell Rapids, SD

Planning on renting a car to go from Dell Rapids, SD to O Fallon, IL? Here there are some offers to rent a car in Dell Rapids, SD

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Dell Rapids »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 26.10 gallons of gas to cover the route between Dell Rapids, SD and O Fallon, IL.

The estimated cost of gas to go from Dell Rapids to O Fallon is $85.15.

During the route, an average car will release 511.45 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 Dell Rapids, SD and O Fallon, IL

If you want to meet halfway between Dell Rapids, SD and O Fallon, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 39.531399 and -94.794868, or 39º 31' 53.0364" N, 94º 47' 41.5248" W. This location is 325.01 miles away from Dell Rapids, SD and O Fallon, IL and it would take approximately 5 hours 58 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Dearborn, MO, situated 350 miles from Dell Rapids, SD and 299 miles from O Fallon, IL. It would take 5 hours 5 mins to go from Dell Rapids to Dearborn and 4 hours 39 mins to go from O Fallon to Dearborn.

Major City Closest to Halfway Point

The major city closest to the halfway point between Dell Rapids, SD and O Fallon, IL is Kansas City, KS, situated 381 miles from Dell Rapids, SD and 267 miles from O Fallon, IL. It would take 5 hours 33 mins to go from Dell Rapids to and 4 hours 8 mins to go from O Fallon to Kansas City.