How far is Rock Island, IL from Decatur, IL?
Distance by Flight
Shortest distance between Rock Island and Decatur is 143.32 miles (230.65 km).
Flight distance from Rock Island, IL to Decatur, IL is 143.32 miles. Estimated flight time is 00 hours 21 minutes.
It takes 00 hours 19 minutes to travel from Rock Island to Decatur with an airplane (average speed of 550 miles).
Driving distance
The driving distance from Rock Island, Illinois to Decatur, Illinois is: 180.06 miles (289.78 km) by car.
Driving from Rock Island to Decatur will take approximately 02 hours 58 minutes.
#1 Rock Island
City in Illinois
| Population | 36870 |
|---|---|
| GPS Coordinates | 41°30'34"N 90°34'44"W |
| Latitude | 41.5094800 |
| Longitude | -90.5787500 |
| Altitude | 171 |
| Country | United States |
#2 Decatur
The most populous city in Macon County, Illinois. It is located on the Sangamon River in central Illinois. Decatur is known for its many parks and green spaces, its many historical sites, and its many attractions, such as the Decatur Museum of Art and History and the Lincoln Log Cabin State Historic Site.
| Population | 70007 |
|---|---|
| GPS Coordinates | 39°50'25"N 88°57'17"W |
| Latitude | 39.8403100 |
| Longitude | -88.9548000 |
| Altitude | 205 |
| Country | United States |
Ending point in Decatur: East Wood Street (-88.954801,39.840341)
Estimated Travel Time Between Rock Island and Decatur
The distance between Rock Island and Decatur is 290 km if you choose to drive by road. You can go 03 hours 13 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 Rock Island and Decatur. The current time is 07:12:47.
| Average Speed | Travel Time |
|---|---|
| 30 mph (48.3 km/h) | 05 hours 59 minutes |
| 40 mph (64.37 km/h) | 04 hours 30 minutes |
| 50 mph (80.47 km/h) | 03 hours 36 minutes |
| 60 mph (96.56 km/h) | 03 hours 00 minutes |
| 70 mph (112.65 km/h) | 02 hours 34 minutes |
| 75 mph (120.7 km/h) | 02 hours 24 minutes |
| 80 mph (128.75 km/h) | 02 hours 14 minutes |
Gas Consumption
A car with a fuel efficiency of 8.3 l/100 km will need 24.05 liters (6.35 gallon) of gas to cover the route between Rock Island and Decatur.
The estimated cost of gas to go from Rock Island to Decatur is $22.92 (diesel $27.32).
Illinois gas prices.
| Gasoline | Mid Grade | Premium | Diesel | |
|---|---|---|---|---|
| Gallon | $3.61 | $4.11 | $4.55 | $4.3 |
| Total | $22.92 | $26.13 | $28.92 | $27.32 |
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 (in Illinois ) per gallon of daily gas for calculations is $3.607 (Diesel $4.300) /gallon. Last changed prices on April 19, 2024.
How did we calculate the distance?
The place names are translated into coordinates to approximate the distance between Rock Island and Decatur (latitude and longitude). Cities, states, and countries each have their own regional center. The Haversine formula is used to measure the radius.
