After playing for Safa Claror, Txell Alarcón joined Femení Sant Adrià in 2014 and she remained in the club during 6 years becoming U12 Catalan Finalist 14/15, U13 Catalan Finalist 15/16, U14 Catalan Champion 16/17, U14 Spanish Finalist 16/17, U16 Catalan and Spanish Champion 17/18 and U16 Catalan and Spanish Finalist 18/19.
Txell was also a member of the Catalan regional team that became U14 Spanish Finalist in 2017 and U16 Spanish Finalist in 2019 and she was also a member of the Spanish National Team that won the Gold Medal in the Friendship Tournament played in Nice in 2015 and impressed in the U16 European Championship played in 2019 averaging 8.9 points and 4.7 rebounds in 21 minutes per game with Spain.
In the 2019/20 season and still at 16 years old, Txell Alarcón was also one of the main players of the Femení Sant Adrià senior team that qualified first in their Liga Femenina 2 group, averaging 6.8 points, 3.6 rebounds and +7.8 efficiency in 23 minutes per game.
In the 2020/21 season and still as an U18 player, Txell Alarcón joined Campus Promete in Spanish top division and she averaged 5.1 points and + 5.3 efficiency in 15 minutes per game (13.6 points +14.1 efficiency per 40 minutes), shining already in her first official game in the competition with 17 points in 17 minutes and being the best 3 point scorer in the competition, scoring 56.4% of her 3 point shots.
|2019/20||FEMENI SANT ADRIA||SPAIN-D2||6.8||3.6||0.8||24||43%||36%||70%||0.6||0.2|
|2018/19||SPAIN||U16 EUROPEAN CHAMPIONSHIP||8.9||4.7||1.6||21||40%||42%||72%||0.7||0.4|
- Best 3 point shooter | Spanish League 20/21
- First Position | Spanish LF2 - 19/20
- Bronze Medal | U16 European Championship 2019
- Silver Medal | U16 Catalan and Spanish Clubs Championship 18/19
- Silver Medal | U16 Spanish Championship - Regional Teams 18/19
- Gold Medal | U16 Catalan and Spanish Clubs Championship 17/18
- Gold Medal | U14 Catalan Clubs Championship 2016/17
- Silver Medal | U14 Spanish Clubs Championship 16/17
- Silver Medal | U14 Spanish Regional Teams Championship 16/17
- Silver Medal | Catalan Clubs Championship 14/15