[3] After an absence of three seasons, it intended to participate in the 2013–14 European Challenge Cup,[4] but was forced to withdraw due to financial issues.

[5] Olympus Rugby XV Madrid competed in the 2009–10 season of the European Challenge Cup.

Note: Flags indicate national union under World Rugby eligibility rules.

[6] In the draw carried out on 5 June 2013 at the Aviva Stadium in Dublin, Olympus Madrid was drawn in Pool 5 against France's Stade Français, England's London Irish and Italy's Cavalieri Prato.

[4] However, due to financial issues, the team withdrew from the competition and was replaced by Lusitanos XV on 2 September 2013.