Cracking 26 upperalphanumeric chars long handshake. (how long does it take?)

Hello.
I want to crack handshake.
I assume there is default password (26 characters long UPPERAPLHANUMERIC)
I'm going to do it like in this tutorial (looks legit)
https://kakkulearning.wordpress.com/2014/05/25/using-amazon-ami-cracking-wpa2-wifi-hack/...