Simone Biles' upcoming flips and tricks will be fueled, in part, by squid and cow ... 'cause TMZ Sports has learned some 24 hours before her next big gymnastics show, the GOAT chowed down on some calamari and steak!
Our sources tell us ... Biles and several other gymnasts hit up STK in Salt Lake City on Sunday night just before their Monday night Gold Over America Tour show -- and they ate like kings and queens.