The 500-class is divided in two Championships:
In the F500 World Championship a series of 6 races are located in Italy, Germany, Czechia and Hungary. On each racing-weekend the teams fight in three single runs for a place on the podium.
The O500 European Championship is driven on four locations (Italy, Germany, Poland and Austria).
Beside the both 500ccm-classes there is also the O700-series with four races per season, at venues in the USA, Poland and Czechia.