sentences:  The single season ranking, introduced in 2019 and limited to the Skyrunner® World Series, and the 52-week ranking which encompasses all races, including the Skyrunner National Series races.In 2019, the Skyrunner® World Series introduced the first single ranking system.The objective of the general ranking is to unify the circuits and key races to make the series even more competitive and define who is the best Skyrunner in the World; a Skyrunner being someone able to face any type of mountain with technicality, speed and intensity, and serves as a base to distribute the end of season bonus pool.