The men's 30 kilometre cross-country skiing competition at the 1968 Winter Olympics in Grenoble, France, was held on Wednesday 7 February at Autrans.

[1][2] Each skier started at half a minute intervals, skiing the entire 30 kilometre course.

Eero Mäntyranta of Finland was the 1966 World champion and also the defending Olympic champion from the 1964 Olympics in Innsbruck, Austria.

[3] Sources:[1][4]