An omnium is a multiple-race event, and the current event features four different types of races.
The entire event is contested within a single day, but there are breaks between each race.
The winner of the omnium is the cyclist who obtains the most points through the four races. The winner of each of the first three races earns 40 points, the second-place cyclist earns 38, the third-place rider 36, and so forth, and the final race has special scoring rules. The races in the omnium are:
Scratch race: Mass start race; first to finish is the winner. Distance is 7.5 km (30 laps).
Tempo race: The new race for 2020, the distance is 7.5 km (30 laps). After the first five laps, the winner of each lap earns one point, and lapping the field earns 20 points. The winner of the race is the cyclist with the most points (the points earned within the tempo race do not count for the omnium total: they are used only to place cyclists for this race).
Elimination race: Every two laps, the last-place cyclist is eliminated.
Points race: A 25 km (100 lap) points race, with points earned for sprints (5/3/2/1, every 10 laps, with double points for the final sprint) and for lapping the field (20 points).