Swiss skier Dario Cologna was the provisional winner of the men's 15km cross-country classic ski race, finishing in 38 minutes, 29.7 seconds on Friday.
If the time holds, Cologna will repeat as the 15km classic Olympic champion and earn his second gold medal of the Sochi Games. The Swiss skier won the skiathlon race earlier this week.
While some skiers still have to finish, none are expected to contend for the podium.
Cologna led the race from the 8km mark to the finish.
The silver medal was provisionally won by Johan Olsson of Sweden, stopping the clock at 38:58.2. Fellow Swede Daniel Richardsson had the bronze with a time of 39:08.5.
Devon Kershaw of Sudbury, Ont., was the fastest Canadian, crossing the line in 41:17.1.
Ivan Babikov of Canmore, Alta., finished in 41:49.2, Graeme Killick of Fort McMurray, Alta., in 44:04.8, and Alex Harvey of St-Ferreol des Neiges, Que., did not finish the race.