Andrea Saenz Castillo represented Mexico in Miss United Continents 2018 that held on 22nd September 2018 at Simón Bolivar Guayaquil Convention Center in the city of Guayaquil, Ecuador. She succeeds and was crowned by the outgoing queeny Miss United Continents 2017 Tatiana Tsmifer.
Miss United Continents 2018 Andrea Saenz Castillo’s court included:
1st Runner-Up: Simone Gadegaard Andersen from Denmark
2nd Runner-Up: Ana Catalina Mouthon from Colombia
3rd Runner-Up: Cynthia Ruz López Escobar from Spain
4th Runner-Up: Belinde Bella Schreuder from South Africa
5th Runner-Up: Biw Nantapak Kraiha from Thailand