Unusual! Sweat and Tears Marathon (珍プレ－!汗と涙のマラソン大会, Chin pure -! Ase to namida no marason taikai), or The Race to Victory in most dubs, is the ninth episode of the 1992 series of Calimero.
In this episode, Calimero and Valeriano participate in an athletic competition. Pierrot boasts that he could do better than them, so Calimero and Valeriano sign him up in secret, much to his displeasure.