There are 1.609344 kilometres in one mile. Therefore, 7.21 kilometres is equal to 7.21/1.609344 = 4.48 miles.
721 miles
The air distance from Springfield, Massachusetts, to Savannah, Georgia, is 830 miles. That equals 1,335 kilometers or 721 nautical miles.
The distance from Los Angeles to Tucson is 721 kilometers. Source: Time and Date.com
It is 721 miles according to Google Maps.
Detroit to Michigan is roughly 721 miles.
There are 721 kilometers from Barcelona to Toledo, and it takes almost 7 hours to drive.
There are no "hours" in any distance. If the question is really "How long would it take to travel 721 miles?" then the answer depends on the average speed, which depends on the mode of travel.
448 MI/ 721 KM
Driving from Gresham, OR to Hyrum , UT it is 721 mi
721 miles apart CHeers Gym_
The area of Kučevo is 721 square kilometers.
The area of Ulvik is 721 square kilometers.