Jean Alavoine was 34 placing 2nd in 1922
Gino Bartali was 35 in 1949
Ferdi Kubler was 35 in 1954
Federico Bahamontes 35 in 1963
Joop Zoetemelk 35 in 1982
Raymond Poulidor "the eternal second" has to top both i think
second place three times, and in third place five times
oldest 2nd 38 in 1974
oldest 3rd 40 in 1976
But now Armstrong is tied with the most podium finishes ever in the TDF with 8.