The Thames Challenge Cup was instituted in 1868, and attracted entries from Home and Overseas crews, aimed at club crews below The Ladies' Challenge Plate standard. The event now has a number of exclusions to ensure that the 'Thames' is an event for typical club crews.
A new event introduced in 2021. This event has a number of exclusions, with the intention of ensuring that this is an event for typical club crews.
The Wyfold Challenge Cup was presented to the Regatta in 1847. At that time it was custom for the challengers in each event to row trial heats among themselves and for the successful challenger to contest the final heat against the winners of the previous year. As the engravings on the cup record, this prize was awarded to the winning challenger for The Grand Challenge Cup. In 1855 the trophy was made over to a four-oared race. in December 1995 the Qualification Rules were bought in line with The Thames Challenge Cup. The intention being to protect the 'Wyfold' as a club event for Coxless Fours.
The Britannia Challenge Cup was presented in 1969 by Nottingham Britannia Rowing Club, on its centenary, as an event for four-oars with Coxwain. This event was originally open to clubs, universities and schools. Until 1988 entries were restricted to crews from the United Kingdom and the Republic of Ireland, after which it was then opened to entries from any country. After the 2003 Regatta the Stewards decided to divide this 32 boat event into two 16 boat events - one restricted to club crews and the other restricted to student crews. This event is now for club crews only, at the same level as The Thames Challenge Cup.