The Aaranmula Boat Race is staged each year in the scenic village of Aaranmula in August/ September. This river carnival is part of the Aaranmula Temple festival. Masses throng the shores of the River Pamba to watch an imposing cluster of snake boats called 'Palliyodams'.

Aranmula Uthrittathi Vallomkali is conducted in the Pamba River in front of Sri Parthasarathi Temple. Though, large snake boats take part in this festival they do not race with each other. Instead, they row in union, to the accompaniment of songs and reach their destination together because Lord Krishna is believed to be present in each boat. Since 1971 this procession has taken the present form of a race conducted by the Palliyoda Seva Sangh.

Each boat, nearly 100 feet long, is a remarkable feat of craftsmanship, with the stem curved to resemble the hood of a snake and a tampering bow. Festooned with silk and gold spangled umbrellas, the boats are manned by a crew of more than 100 men.