Menanyakan hal-hal di dekat geolokasi?

Saya rasa Anda membalik garis lintang (37.780182) dan garis bujur (-122.517349) dari titik pusat Anda, coba:

select
    id,
    hike_title,
    lat,
    lng,
    ( 3959 * acos(  cos( radians(37) )
                  * cos( radians( lat ) )
                  * cos( radians( lng ) - radians(-122.517349) )
                  + sin( radians(37.780182) ) * sin( radians( lat ) )
                 )
    ) AS distance
FROM
    my_awesome_table
HAVING
    distance < 10000
ORDER BY
    distance
LIMIT
    0 , 50