|High School:||Boston Latin|
|Major:||History (Education Focus)|
Banrey competed for four years in both swimming and track & field at Boston Latin High School. He was a two-time team MVP in swimming and qualified for both Division I Sectionals and the MIAA Division I State Championships in 2017 and 2018. During his senior season, he finished fourth at Sectionals and seventh at the state championships.
Banrey swam for the Dolphin Swim Club from 2010 to 2016.
Banrey, nicknamed "GC", was born in Dorchester, Mass. His parents are Sonia Gomez-Banrey and Eduardo Banrey Rivera. He has three older siblings, two brothers named Antonio and Eduardo and a sister named Sonia. He is majoring in history with an education focus.