Qualification round: 12–15 September 2024 Main Round: 8 October – 4 December 2024 Quarter-finals round: 4 February – 14 May 2025 Final four: 30 May 2025–1 June 2025
After one qualification round, sixteen teams will qualify for the group stage. Four groups of four will be played., with the top two in each group will make the quarter-finals round (also a group stage). The team that finish third and fourth will compete in the 2024–25 LEN Euro Cup knockout stage. The remaining eight teams in the quarter-finals round will play a further six matches, with the top two in each group making the final four.[1][2]
Rankings
The top 11 best ranked countries in the new rankings are allowed to have their national champion go directly into the main round, as long as they meet requirements.[3]
Alongside the 11 domestic champions, the defending champions also get a spot in the main round. In the event that the Champions League defending champions won their national league, the runners-up of the national league will take the vacant spot. In this season, as FTC-Telekom are the reigning champions, Hungary's spot was given to the Hungarian runners-up, A-Híd Vasas Plaket. After the abrupt withdrawal of the Italian champions, Pro Recco, due to financial reasons,[4][5]RN Savona, who placed second, takes their place in the Main round.[6] Also, despite finishing fourth, CC Ortigia took Italy's third spot in the tournament.[7] Croatia also saw a team withdrawing with Primorje EB Rijeka, who placed third, giving up their spot. The replacement was HAVK Mladost Zagreb, who finished fourth.[8]
Location of teams of the 2024–25 LEN Champions League group stage. Red: Group A; Blue: Group B; Yellow: Group C; Green: Group D
The top two from each group make the quarter-finals round. The bottom two from each group drops down to the Euro Cup eighth-finals.
Teams are ranked according to points (3 points for a win, 2 points for a penalty shootout win, 1 point for a penalty shootout loss, 0 points for a loss), and if tied on points, the following tiebreaking criteria are applied, in the order given, to determine the rankings:
Points in head-to-head matches among tied teams;
Goal difference in head-to-head matches among tied teams;
Goals scored in head-to-head matches among tied teams;
For the first time ever, Romania will be represented by two clubs in the group stage, while Montenegro will boast two clubs in the group stage for the first time since 2011–12. Overall, a total of 11 countries are present in the group stage.
The four group winners and four group runners-up were drawn into two groups, with each one containing two group winners and two group runners-up. The top two teams in each group advanced to the Final Four.
Draw
The draw took place in Zagreb on 11 December. The seeded and unseeded clubs consist of the teams that finished first and second in the previous round respectively. The only restriction was that clubs from the same group in the Main round could not be drawn against each other.[10]
Teams are ranked according to points (3 points for a win, 2 points for a penalty shootout win, 1 point for a penalty shootout loss, 0 points for a loss), and if tied on points, the following tiebreaking criteria are applied, in the order given, to determine the rankings:
Points in head-to-head matches among tied teams;
Goal difference in head-to-head matches among tied teams;
Goals scored in head-to-head matches among tied teams;