Not sure if a Find hit object exposes it but if not you can just use .NET GeoCoordinate.

https://msdn.microsoft.com/en-us/library/system.device.location.geocoordinate.getdistanceto.aspx

https://stackoverflow.com/questions/6366408/calculating-distance-between-two-latitude-and-longitude-geocoordinates

Thanks for your post. This is what I have implemented so far, was just hoping that there was a way to get it from find itself, as you can sort them by distance.

Found this post while also searching for the same answer. There is now a GeoCoordinate class in the Episerver.Personalization namespace that has a GetDistanceTo method. Unfortunately the types are mismatched, but you can do the following (in long hand for clarity):

const double MetersToMilesRatio = 0.00062137;
var currentLocation = new GeoCoordinate(geo.Latitude, geo.Longitude);
var toLocation = new GeoCoordinate(x.Latitude, x.Longitude);
var distance = Math.Round(currentLocation.GetDistanceTo(toLocation) * MetersToMilesRatio, 3);

When performing a geo-distance search, you can use the .DistanceFrom() method to calculate and retrieve the distance from a given point. Here's a simplified example in C#:

var centerLocation = new GeoLocation(51.4545, -2.5879); // Bristol coordinates
var results = searchClient
    .Search<LocationPage>() // Your content type
    .Filter(x => x.Coordinates.WithinDistanceFrom(centerLocation, 10, DistanceUnit.Miles))
    .OrderBy(x => x.Coordinates.DistanceFrom(centerLocation))
    .Select(x => new
    {
        x.Name,
        Distance = x.Coordinates.DistanceFrom(centerLocation)
    })
    .GetResult();