Rideau Valley Roller Derby The Bytown Blackhearts hosted their first bout in Ottawa in January 2009 against the Sexpos of
Montreal Roller Derby. By June 2011, the league was known as "Rideau Valley Roller Girls" and hosted the first Canadian Women's Roller Derby Association East Tournament, losing in the final to the
Forest City Derby Girls. By late 2011, Rideau Valley bouts were attracting up to and over 1,000 fans per game. In January 2011, Rideau Valley was accepted as an
apprentice member of the
Women's Flat Track Derby Association. Rideau Valley skater Soul Rekker was selected to skate for
Team Canada at the
2011 Roller Derby World Cup in December 2011, and was later joined by leaguemate Semi Precious (Hanna Murphy). Murphy and Soul Rekker returned to their national team for the
2014 Roller Derby World Cup. In April 2017, Rideau Valley rebranded as "Rideau Valley Roller Derby" to put more emphasis on the sport and to better respect its members. At the end of 2017, Rideau Valley featured the Vixens A-team and Sirens B-team, and three home teams, the Slaughter Daughters, Riot Squad and Prime Sinisters.
Capital City Derby Dolls Formed in 2008, the league was made up of the Dolly Rogers (A), Dollinquents (B), Cupquakes, Cannon Dolls, and the Beauty School Dropouts (home teams). Renée Labrosse (derby name The Big Labrosski) and Ashley Ronson (Watcher Ash) from the league were selected for
Team Canada in 2016, for the
2018 Roller Derby World Cup roster. ==WFTDA competition==