Shortest distance between Romeoville and Decatur is 132.83 miles (213.76 km).
Flight distance from Romeoville, IL to Decatur, IL is 132.83 miles. Estimated flight time is 00 hours 18 minutes.
It takes 00 hours 16 minutes to travel from Romeoville to Decatur with an airplane (average speed of 550 miles).
The driving distance from Romeoville, Illinois to Decatur, Illinois is: 153.9 miles (247.68 km) by car.
Driving from Romeoville to Decatur will take approximately 02 hours 36 minutes.
The distance between Romeoville and Decatur is 248 km if you choose to drive by road. You can go 02 hours 45 minutes if you drive your car at an average speed of 90 kilometers / hour. For different choices, please review the avg. speed travel time table on the below.
There is no time difference between Romeoville and Decatur. The current time is 15:01:17.
|Average Speed||Travel Time|
|30 mph (48.3 km/h)||05 hours 07 minutes|
|40 mph (64.37 km/h)||03 hours 50 minutes|
|50 mph (80.47 km/h)||03 hours 04 minutes|
|60 mph (96.56 km/h)||02 hours 33 minutes|
|70 mph (112.65 km/h)||02 hours 11 minutes|
|75 mph (120.7 km/h)||02 hours 03 minutes|
|80 mph (128.75 km/h)||01 hours 55 minutes|
A car with a fuel efficiency of 8.3 l/100 km will need 20.56 liters (5.43 gallon) of gas to cover the route between Romeoville and Decatur.
The estimated cost of gas to go from Romeoville to Decatur is $18.36 (diesel $20.2).
Take a look at our Gas Cost Calculator feature. It will figure out how much it will cost to drive this particular distance.
The average gas price per gallon of daily gas for calculations is $3.38 (Diesel $3.72) /gallon. Last changed prices on December 04, 2021.
The place names are translated into coordinates to approximate the distance between Romeoville and Decatur (latitude and longitude). Cities, states, and countries each have their own regional center. The Haversine formula is used to measure the radius.