Air Miles Calculator logo

How far is Round Lake from Rockford, IL?

The distance between Rockford (Chicago Rockford International Airport) and Round Lake (Round Lake (Weagamow Lake) Airport) is 750 miles / 1206 kilometers / 651 nautical miles.

The driving distance from Rockford (RFD) to Round Lake (ZRJ) is 1058 miles / 1703 kilometers, and travel time by car is about 29 hours 30 minutes.

Chicago Rockford International Airport – Round Lake (Weagamow Lake) Airport

Distance arrow
750
Miles
Distance arrow
1206
Kilometers
Distance arrow
651
Nautical miles

Search flights

Distance from Rockford to Round Lake

There are several ways to calculate the distance from Rockford to Round Lake. Here are two standard methods:

Vincenty's formula (applied above)
  • 749.634 miles
  • 1206.419 kilometers
  • 651.414 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.

Haversine formula
  • 749.681 miles
  • 1206.495 kilometers
  • 651.455 nautical miles

The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).

How long does it take to fly from Rockford to Round Lake?

The estimated flight time from Chicago Rockford International Airport to Round Lake (Weagamow Lake) Airport is 1 hour and 55 minutes.

What is the time difference between Rockford and Round Lake?

There is no time difference between Rockford and Round Lake.

Flight carbon footprint between Chicago Rockford International Airport (RFD) and Round Lake (Weagamow Lake) Airport (ZRJ)

On average, flying from Rockford to Round Lake generates about 130 kg of CO2 per passenger, and 130 kilograms equals 286 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Rockford to Round Lake

See the map of the shortest flight path between Chicago Rockford International Airport (RFD) and Round Lake (Weagamow Lake) Airport (ZRJ).

Airport information

Origin Chicago Rockford International Airport
City: Rockford, IL
Country: United States Flag of United States
IATA Code: RFD
ICAO Code: KRFD
Coordinates: 42°11′43″N, 89°5′49″W
Destination Round Lake (Weagamow Lake) Airport
City: Round Lake
Country: Canada Flag of Canada
IATA Code: ZRJ
ICAO Code: CZRJ
Coordinates: 52°56′36″N, 91°18′46″W