OK - I looked at that site and tried to do a couple calculations - it seems I got the result in radians, then upon trying to convert that to nautical miles I ended up with 4809 nm from hawthorne nevada to topak nevada - I don't think that is quite right...

So help me please - given 2 long/lat locations - what steps do I take to get distance in either km, nm or miles - anyone will do!

Canie