System for light signalling to supply a moving light reference (60) to an athlete, said system (10) including a plurality of lighting elements (20), in particular light emitting diodes, arranged along an athlete path, controlling means (11, 19) adapted to control said plurality of lighting elements (20) according to a lighting sequence adapted to generate said moving light reference (60) and to impart to said moving light reference (60) a displacement speed along said plurality of lighting elements (20) which is settable through said controlling means (11, 19). According to the invention, said system (10) further comprises a plurality of microcontrollers (23) arranged in a cascaded connection with respect to command signals (42) pertaining lighting parameters sent by said controlling means (11, 19) and arranged along said athlete path, said microcontrollers (23) being connected to respective sets of lighting elements in said plurality of lighting elements (20) to command their lighting state on the basis of said command signals (42).