Hassan was a standout runner all four years of high school, attending Birchmount Park Collegiate Institute in Toronto and competing on the club level for the Phoenix Athletics Association.

The following month, Hassan made his international debut, representing Canada at the NACAC U18 Championships in Queretaro, Mexico.

[5] In his first season of collegiate competition, Hassan qualified for both the NCAA Indoor and Outdoor Championships, but failed to make the final on both occasions.

Competing at the 2022 NCAA Indoor Championships, Hassan contested the DMR alongside Wisconsin teammates Adam Spencer, David Wenthe, and Jackson Sharp.

At the 2023 NCAA Indoor Championships, Hassan once again competed as part of Wisconsin's DMR team, replicating their performance from the year prior as well, placing third.

[6] Hassan opened his 2024 season with an indoor 800 m personal best of 1:46.61 to take the win at the Badgers Windy City Invite in Chicago, breaking the Wisconsin school record in the process.