The Waterside Series is a series of four marathon canoe races held on the Kennet and Avon Canal and finishing at the Newbury Waterside Centre.
The race series is held in the Spring each year in the eight weeks leading up to Easter. They are held on Sundays at fortnightly intervals starting eight weeks before Easter, and the races are progressively longer in distance.
It is common to use the Waterside Series as a warm-up event for the longer, 125-mile Devizes to Westminster International Canoe Marathon. Despite its status as a warm-up event, it is considered a gruelling challenge in its own right.