Alizadeh was born in 2004 in Tehran, Iran. When she was 11 years old, in the last competitions of the cup of martyrs viceroy of Azerbaijan on Islamic countries, held in the Tabriz, she broke 13 national records in Iran.[4][5][6] At 2018, she was invited by the Swimming Federation of the Republic of Azerbaijan and went to Baku to continue her career in the National Swimming Team of the Republic of Azerbaijan. Maryam qualified for Tokyo 2020 on this sport after participating in various swimming competitions and Budapest international swimming competitions. She is known as the first woman to qualify for the Olympics in the history of Iranian women's swimming after 43 years.[7]
Alizadeh took several valuable places in women's swimming after the world competitions. She won the third place in the freestyle competitions of the Slovak Republic three times within a year. Then she participated in Latvia freestyle competitions and once took second and once third place. She is now a world ranking female athlete of Swimming Federation (FINA).[10]