Depending on the time available before pre-season preparations begin for the first race, these cycles can be repeated where a person does a phase of strength endurance training followed by improving basic strength and then repeats a strength endurance phase which is then followed by a basic strength phase. Understandably, a person may have a limited period of time and may only decide to do one cycle.
Note that each of these phases (strength endurance, basic strength and strength power) all can vary between 1 to 4 weeks of time. It should be noted that resistance training should not be attempted for multiple different categories of strength at the same time. It is important to do them in the right order because the adaptations achieved during each phase will facilitate development during the next phase of the training continuum. It will greatly benefit your health as a runner to engage in off-season resistance training.
We had talked previously about appropriate training and strength exercises for during the season and I have posted to my blog about appropriate exercises for endurance athletes. Go to my blog for more information on modes of resistance training like bands or free weights and to find out if doing core stability exercises hurts or helps endurance performance.
Take a look here for more examples of strength programming for endurance athletes.