How to find out distance between coordinates?

CLLocation has a distanceFromLocation method so given two CLLocations:

CLLocationDistance distanceInMeters = [location1 distanceFromLocation:location2];

or in Swift 4:

//: Playground - noun: a place where people can playimport CoreLocationlet coordinate₀ = CLLocation(latitude: 5.0, longitude: 5.0)let coordinate₁ = CLLocation(latitude: 5.0, longitude: 3.0)let distanceInMeters = coordinate₀.distance(from: coordinate₁) // result is in meters

you get here distance in meter so 1 miles = 1609 meter

if(distanceInMeters <= 1609) { // under 1 mile } else{ // out of 1 mile }

Swift 4.1

import CoreLocation//My locationlet myLocation = CLLocation(latitude: 59.244696, longitude: 17.813868)//My buddy's locationlet myBuddysLocation = CLLocation(latitude: 59.326354, longitude: 18.072310)//Measuring my distance to my buddy's (in km)let distance = myLocation.distance(from: myBuddysLocation) / 1000//Display the result in kmprint(String(format: "The distance to my buddy is %.01fkm", distance))

Try this out:

distanceInMeters = fromLocation.distanceFromLocation(toLocation)distanceInMiles = distanceInMeters/1609.344

From Apple Documentation:

Return Value: The distance (in meters) between the two locations.