2016-17: (XC) Began the season with a 34th place finish at the Iona Br. Paddy Doyle Meet of Champions where his 8K time of 26:53.0 helped secure a fifth place finish for the Lions … Finished the Metropolitan Championships five mile run in 26:54.8, earning a 12th place individual finish, and a third place team finish. (T&F) Ran 9:15.36 in the 3,000m at the Stony Brook Season Opener ... Went 15:39.98 in the 5,000m at the Yale Springtime Invitational.
2014-15: Clocked a season best in the 8K at the Princeton XC Invitational (10/18) in 26:10.
High School: Tierney arrived to Columbia with personal best times of 4:18.12 in the one mile run and 9:04.11 in the two mile run.