Fastest Way to Find Distance Between Two Lat/Long Points

Question

I currently have just under a million locations in a mysql database all with longitude and latitude information.

I am trying to find the distance between one point a

Answer 1

SELECT * FROM (SELECT *,(((acos(sin((43.6980168*pi()/180)) * 
sin((latitude*pi()/180))+cos((43.6980168*pi()/180)) * 
cos((latitude*pi()/180)) * cos(((7.266903899999988- longitude)* 
pi()/180))))*180/pi())*60*1.1515 ) as distance 
FROM wp_users WHERE 1 GROUP BY ID limit 0,10) as X 
ORDER BY ID DESC

This is the distance calculation query between to points in MySQL, I have used it in a long database, it it working perfect! Note: do the changes (database name, table name, column etc) as per your requirements.