Aslanhan started athletics in 2015 with the support of his older brother.[5] He continued to run long-distance during his high school years. In 2018, he became champion at the Turkish CrossCountry Championships.[2] He is a member of Fenerbahçe Athletics.[6]
Aslanhan took the silver medal in the 3000 m event at the 2017 Balkan U18 Championships held in Istanbul, Turkey.[7]
He captured the gold medal in the 3000 m event at the 2018 Balkan U18 Championships in Istanbul.[8]
He won the silver medal in the 5000 m event at the
2019 European Athletics U20 Championships in Borås, Sweden,[6] the bronze medal in the 5000 m event at the 2019 Balkan Athletics Championships in Pravets, Bulgaria,[9] and another silver medal in the 6 km event of the U20 category at the 2019 European Cross Country Championships in Lisbon, Portugal.[10]
During the COVID-19 pandemic in Turkey, he trained running 20 km every day at the Bitlis 8 Ağustos Stadium under the supervision of the national team coach Fahri Tunçtan.[5]
Aslanhan received the silver medal in the half marathon individual event, and the gold medal in the half marathon team event with teammates Sezgin Ataç, Ömer Amaçtan and Mahsun Değer at the 2021 Summer World University Games in Chengdu, China, which were held in 2023.[11]
In 2024, he became bronze medalist in the 5000 m event at the Balkan Athletics Championships in İzmir, Turkey.[12]
He took the bronze medal in the 3000 m event with 8:21.71 at the 2025 Balkan Athletics Indoor Championships in Belgrade, Serbia.[4] He competed at the 2025 Summer World University Games in Bochum, Germany, and won the silver medal in the half marathon team event with teammates Ramazan Baştuğ, Azat Demirtaş and Ömer Amaçtan.[13]
Turkey
