The Kandassankadavu Boat Race is one of the oldest snake boat competitions in Thrissur district. The event is held on Thiruvonam day according to the Malayalam calendar at the Conolly Canal.
The event, which began in 1956, had a sporadic run until 2011. The first race was kind of an exhibition match between two churulan vallams (small snake boats), which was organised as part of the Kerala Day celebrations. The next event happened in 1962 during the Onam celebrations. It ran for six years until coming to a stop in 1968.
In 1977, a few of the organisers of the debut race initiated and revived the event. The water fest went on without a break till 1990. The race was almost forgotten for 20 years until the district administration, Manalur Grama Panchayat and Thrissur DTPC (District Tourism Promotion Council) came together to revive it.
Now, the Kandassankadavu Boat Race is held as part of a 10-day Onam festival. The race track on the canal is 990 metres long, which extends from the Pulam Puzhakkadavu to Kandassankadavu Boat Jetty. Major snake boats and boating clubs compete for the Chief Minister's Ever Rolling Trophy every year.