2019–20 ISU Speed Skating World Cup – World Cup 4

The fourth competition weekend of the 2019–20 ISU Speed Skating World Cup was held at the M-Wave in Nagano, Japan, from Friday, 13 December, until Sunday, 15 December 2019.

Men's events

 * In mass start, race points are accumulated during the race based on results of the intermediate sprints and the final sprint. The skater with most race points is the winner.

Women's events

 * In mass start, race points are accumulated during the race based on results of the intermediate sprints and the final sprint. The skater with most race points is the winner.