Shortest distance between Johnston City and Rockford is 307.63 miles (495.08 km).
Flight distance from Johnston City, IL to Rockford, IL is 307.63 miles. Estimated flight time is 00 hours 43 minutes.
It takes 00 hours 39 minutes to travel from Johnston City to Rockford with an airplane (average speed of 550 miles).
The driving distance from Johnston City, Illinois to Rockford, Illinois is: 362.36 miles (583.16 km) by car.
Driving from Johnston City to Rockford will take approximately 05 hours 35 minutes.
The second most populous city in Illinois. It is located in the northwestern part of the state. Rockford is known for its many manufacturing companies, its many parks and green spaces, and its many attractions, such as the Rockford Art Museum and the Burpee Museum of Natural History.
|GPS Coordinates||42°16'16"N 89°5'38"W|
The distance between Johnston City and Rockford is 583 km if you choose to drive by road. You can go 06 hours 28 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 Johnston City and Rockford. The current time is 11:14:23.
|Average Speed||Travel Time|
|30 mph (48.3 km/h)||12 hours 04 minutes|
|40 mph (64.37 km/h)||09 hours 03 minutes|
|50 mph (80.47 km/h)||07 hours 14 minutes|
|60 mph (96.56 km/h)||06 hours 02 minutes|
|70 mph (112.65 km/h)||05 hours 10 minutes|
|75 mph (120.7 km/h)||04 hours 49 minutes|
|80 mph (128.75 km/h)||04 hours 31 minutes|
A car with a fuel efficiency of 8.3 l/100 km will need 48.4 liters (12.79 gallon) of gas to cover the route between Johnston City and Rockford.
The estimated cost of gas to go from Johnston City to Rockford is $48.27 (diesel $55.24).
Illinois gas prices.
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 $3.775 (Diesel $4.320) /gallon. Last changed prices on October 04, 2023.
The place names are translated into coordinates to approximate the distance between Johnston City and Rockford (latitude and longitude). Cities, states, and countries each have their own regional center. The Haversine formula is used to measure the radius.