Choose the event that best suits you internationally. Basic speed is the governing factor. The aim is to develop sufficient endurance to maintain the necessary speed over the race distance to be successful. In middle distance and distance events, a high aerobic threshold is necessary. Stamina can be continually developed.
Aerobic development is a limited factor.
Once anaerobic training is started, it must be continued, otherwise development is lost. Once conditioning is finished, the performance level is determined. Conditioning requires many kilometers in training. It can only be accomplished aerobically 10. It is a mistake to use anaerobic training during the conditioning phase.