Kalevi Viskari had a fairly successful gymnastics career during the first half of the 1950s. He first major success was in winning silver in the team all-around at the 1950 World Championships alongside Paavo Aaltonen, Veikko Huhtanen, Kalevi Laitinen, Kaino Lempinen, Olavi Rove, Heikki Savolainen, and Esa Seeste. His next stop was the 1952 Helsinki Olympics, where he took bronze in the team all-around with the same lineup, except with Onni Lappalainen and Berndt Lindfors replacing Huhtanen and Seeste. Individually, Viskari’s best finish was joint-11th (with Aaltonen and Switzerland’s Hans Eugster) in the horizontal bar. He also won gold medals at the Finnish Championships in 1953 and the Nordic Championships in 1955. Following his retirement from active competition, he coached for both the Finnish and Norwegian national gymnastics teams.