Fortlek training method is used for developing endurance. Gosta holmer developed Fortlek training in 1937. The word ‘fortlek’ is a Swedish word means ‘speed play’. It is such a training method that blends continuous training with interval training. This training method lays emphasis on both the aerobic and anaerobic systems. In this method, pace or speed is not preplanned so it is left upto the individual. He can change his speed according to the surroundings (hills, rivers, forests, muddy roads, metal roads and grassy grounds) self discipline plays a vital role in Fortlek training method.