It is not late even in 50 Only there is a difference if you want to ride for pleasure there are no age barrieres at all but if you want to become a successful sportsman the age would of course have some meaning But not as crucial as in other sports there are examples when people won Olimpiade after 60 And for begining of the sport career there is no rule the earlier the better In the past the sport schools accepted only in 12 From all points of view your age is the best to start You will simply have more time for achievements