Welcome to the site MEK Runner...
From Wikipedia, MEK can stand for
* In Iran, the Mujahedeen-e_Khalq
* In Hungary the Magyar Elektronikus Konyvtar
* In chemistry Methyl ethyl ketone
* The Iranian organisation Mujahideen al-Khalq
* In cryptography Message Encryption Key
* The Mobiles Einsatzkommando, a special police unit in Germany
* The MAPK/ERK kinase
So which is it- what are you running from (or for) anyway?