The purpose of this study was to determine the effect of the Fartlek Proposed Training Program on Some of Physiological and PhysicalVariablesAmongst Soccer Players in An-Najah National University, to achieve this, the study was conducted on a sample of (30)players, aged (18-24) years, The researcher employed the experimental method as it suits the nature of the study, and distributed randomly equally to two groups experimental group and control group.