Four Cross (4X)

Often abbreviated to "4X", four cross was inspired by the dual format and by BMX racing, this event pits 4 riders on the same course from starting gates to finish. There can only be one winner per event, so the races can quickly eliminate riders making the progression faster for a day's events. This is the reason it was chosen as the race-format to replace Dual-Slalom by NORBA, the US National race authority. 4X also replaced dual in the UCI World Cup series in 2002.