Original: Of the four novels, Hyperion received the Hugo and Locus Awards in 1990; The Fall of Hyperion won the Locus and British Science Fiction Awards in 1991; and The Rise of Endymion received the Locus Award in 1998.
Simplified: Three of the novels received the Locus Award for best science fiction novel: Hyperion (1990), The Fall of Hyperion (1991) and The Rise of Endymion (1998).