Sorokina was the gold medallist at the 1981 IAAF World Cup setting a meet record. She represented the Soviet Union at the 1972 Summer Olympics. At continental level, she was a bronze medallist at the 1974 European Athletics Indoor Championships and the winner of the 1981 European Cup. In her last major performance she was a finalist at the 1982 European Athletics Championships. She was a five-time national champion indoors.