Mitchell gained six All-America honors in indoor and outdoor track and field, finishing as high as second in the nation twice in the triple jump. She gained All-America status in both indoor and outdoor track in her sophomore, junior, and senior seasons, and still holds the school record in the triple jump and as a member of the 400 meter relay. She placed runner up in the triple jump twice at NCAA Championships, and took third once, fifth, sixth, and eight once, making her one of the most decorated athletes in school history with six All-America performances.