Chernousov's first World Cup victory was in the 4×10 km relay in
Switzerland in 2007. His best individual results came in the 30 km pursuit in 2011: a third place at the world championship and the first place at the world cup. At the
FIS Nordic World Ski Championships 2007 in
Sapporo, he finished 31st in the 15 km + 15 km double pursuit event. At the 2014 Olympics Chernousov finished third in the
50 km freestyle. He was promoted to the first placed after the ban of gold and silver medalists,
Alexander Legkov and
Maxim Vylegzhanin. This decision was reversed in 2018. In the
30 km skiathlon Chernousov placed fifth. ==Cross-country skiing results==