How far is Quincy, IL from Decatur, IL?
Distance by Flight
Shortest distance between Quincy and Decatur is 130.32 miles (209.73 km).
Flight distance from Quincy, IL to Decatur, IL is 130.32 miles. Estimated flight time is 00 hours 18 minutes.
It takes 00 hours 16 minutes to travel from Quincy to Decatur with an airplane (average speed of 550 miles).
Driving distance
The driving distance from Quincy, Illinois to Decatur, Illinois is: 149.45 miles (240.51 km) by car.
Driving from Quincy to Decatur will take approximately 02 hours 25 minutes.
#1 Quincy
County seat of Adams County, Illinois, United States
| Population | 39589 |
|---|---|
| GPS Coordinates | 39°56'8"N 91°24'36"W |
| Latitude | 39.9356000 |
| Longitude | -91.4098700 |
| Altitude | 173 |
| 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 Quincy and Decatur
The distance between Quincy and Decatur is 241 km if you choose to drive by road. You can go 02 hours 40 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 Quincy and Decatur. The current time is 01:15:03.
| Average Speed | Travel Time |
|---|---|
| 30 mph (48.3 km/h) | 04 hours 58 minutes |
| 40 mph (64.37 km/h) | 03 hours 44 minutes |
| 50 mph (80.47 km/h) | 02 hours 59 minutes |
| 60 mph (96.56 km/h) | 02 hours 29 minutes |
| 70 mph (112.65 km/h) | 02 hours 08 minutes |
| 75 mph (120.7 km/h) | 01 hours 59 minutes |
| 80 mph (128.75 km/h) | 01 hours 51 minutes |
Gas Consumption
A car with a fuel efficiency of 8.3 l/100 km will need 19.96 liters (5.27 gallon) of gas to cover the route between Quincy and Decatur.
The estimated cost of gas to go from Quincy to Decatur is $19.02 (diesel $22.68).
Illinois gas prices.
| Gasoline | Mid Grade | Premium | Diesel | |
|---|---|---|---|---|
| Gallon | $3.61 | $4.11 | $4.55 | $4.3 |
| Total | $19.02 | $21.68 | $24 | $22.68 |
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 December 18, 2024.
How did we calculate the distance?
The place names are translated into coordinates to approximate the distance between Quincy and Decatur (latitude and longitude). Cities, states, and countries each have their own regional center. The Haversine formula is used to measure the radius.
