For the preliminary competitions leading to the finale of Miss Earth 2017 - talent, swimsuit, long gown and resort wear - the candidates have been divided into three groups and will compete in their respective groups and Top 3 winners from each group for each contest will be declared, and the results of these contests do count in the final judgment.
On 17th October 2017, the evening gown competition for Group 2 delegates was held, and the winners of long gown competition (Group 2) were:
Gold: Miss Earth Peru Karen Isabel Rojas Chavez
Silver: Miss Earth Costa Rica Fernanda Rodríguez and Miss Earth Philippines Karen Ibasco (tied)
Bronze: Miss Earth Nigeria Eucharia Windy Akani

On 22nd October 2017, the long gown competition for Group 3 contestants was held, and the winners of long gown competition (Group 3) were:
Gold: Miss Earth Puerto Rico 2017 Karla Victoria Apónte
Silver: Miss Earth Mexico 2017 Ana Karen Bustos González
Bronze: Miss Earth Vietnam 2017 Le Thi Ha Thu
On 26th October 2017, the long gown competition for Group 1 contestants was held, and the winners of long gown competition (Group 1) were -
Gold: Miss Earth Venezuela 2017 Ninoska Vasquez
Silver: Miss Earth Thailand 2017 Paweensuda Drouin
Bronze: Miss Earth Netherlands 2017 Faith Gennevieve & Miss Earth Panama 2017 Erika Parker (Tied)
