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

Distance from Sims, IL to Boulder, CO

Distance

969 mi

Time

17 hours 27 mins

Gas Cost

$90 - $176

There are 902.40 miles from Sims to Boulder in west direction and 969 miles (1,559.45 kilometers) by car, following the I-70 and US-40 route.

Sims and Boulder are 17 hours 27 mins far apart, if you drive non-stop .

This is the fastest route from Sims, IL to Boulder, CO.

Please note the time difference between Sims, IL and Boulder, CO is 1 hour. The current time in Sims is 11:19 am and the current time in Boulder is 10:19 am.

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Lowest Price Rental Cars in Sims, IL

Planning on renting a car to go from Sims, IL to Boulder, CO? 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 38.91 gallons of gas to cover the route between Sims, IL and Boulder, CO.

The estimated cost of gas to go from Sims to Boulder is $126.94.

During the route, an average car will release 762.41 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 Boulder, CO

If you want to meet halfway between Sims, IL and Boulder, CO or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 38.992261 and -96.979251, or 38º 59' 32.1396" N, 96º 58' 45.3036" W. This location is 484.48 miles away from Sims, IL and Boulder, CO and it would take approximately 8 hours 43 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Chapman, KS, situated 487 miles from Sims, IL and 485 miles from Boulder, CO. It would take 9 hours 18 mins to go from Sims to Chapman and 8 hours 17 mins to go from Boulder to Chapman.

Major Cities Along the Route

Some major cities along the route include Thornton, CO, Saint Louis, MO, Independence, MO, Topeka, KS, Kansas City, MO, Aurora, CO, Kansas City, KS, Westminster, CO and Columbia, MO.