Snake boat races are an integral part of Kerala's cultural heritage. The origin of the current format of systematic snake boat races began at Thazhathangadi in Kottayam district in 1887. Diwan Peshkar (Chief minister) Rama Rao of the Travancore kingdom is credited with founding the Thazhathangadi Boat Race.
The Thekkumkoor kings reigned Kottayam before the Travancore rule. They used to conduct boat races at Thazhathangadi for the entertainment of the royal family. During the Thekkumkoor rule, Thazhathangadi used to be the capital and commercial centre. It was Diwan Rama Rao who built the Kottayam town and shifted the capital there.
Being interested in snake boats and the utility of various kalivallams (sporting boats), the Diwan gave shape to the Thazhathangadi Boat Race. He divided the races based on different boat classes. This led to the birth of Kerala's first ever systematic public snake boat race. The event became a matter of pride for local residents whose enthusiasm turned it into an annual event.
In 1937, Sri Chithira Thirunal Rama Varma, the last ruling Maharaja of the Travancore kingdom, came to watch the race. Following his visit, the race was renamed as Sri Chithira Boat Race. Later in 1956, when Emperor Hayley Salasi of Ethiopia visited Kottayam, snake boat race was held in his honour at Thazhathangadi. After that the event was christened as Hayley Salasi Ever-rolling Trophy.
The boat race wasn't conducted for many years due to various reasons until the West Club at Kottayam took the initiative to revive the tournament in 1998. Every year since, the Thazhathangadi Boat Race is conducted by the Kottayam City Corporation annually where major clubs and snake boats vie for the Golden Jubilee Ever-rolling Trophy.