Prior to the 1968 Summer Olympics in Mexico City, Čáslavská lost her training facility due to the Soviet-led invasion of Czechoslovakia. Instead, she used potato sacks as weights and logs as beams whilst training in the forests of Moravia. She was again dominant at the 1968 Summer Olympics, winning medals in all six events. She defended her all-around title and won additional gold medals on the floor, uneven bars and vault, as well as two silvers, for the team competition and balance beam. As of the 2020 Olympic Games in Tokyo,she and Larisa Latynina are the only gymnast to win the gold medal in individual all-around in consecutive Olympic games as well as the only female gymnast to defend her gold medal in the vault apparatus. Her use of the "Jarabe tapatío" as the music for her floor routine and her subsequent marriage in the city made her immensely popular with the Mexican crowd.