[1] He attended Garbally College in Ballinasloe, playing for the side in the Connacht Junior Schools Cup, scoring a try as they beat Coláiste Iognáid in the final in 2005.

[2] O'Halloran later transferred to Cistercian College in Roscrea and played for them in the Leinster Senior Schools Cup.

[5] O'Halloran was involved with the Connacht youth set up from a young age, and trained with the academy squad at just 16 years old.

[9] The following season, while still in the academy, O'Halloran made three replacement appearances in the 2010–11 Celtic League,[10] but didn't feature in the Challenge Cup.

[13] In addition to his 48 tries, the Connemara native kicked 3 conversions (1 v Zebre 3/3/2017; 2 v Oyonnax 20/1/2018) and a drop goal (v Cardiff 12/2/2017) during his career.

In 2012, Aidan O'Halloran became President of the Connacht Branch of the IRFU while his son was playing for the senior team.