Our Junior Triathlon program is segmented into four specific developmental tiers: Tier one – Sessional; Tier two – Development; Tier three – Performance; and Tier four – High performance. These Tiers cover the whole gamut of adolescent development. Adolescence, broadly speaking, is the years from puberty to adulthood, and may be roughly divided into three stages: early adolescence, generally ages eleven to fourteen; middle adolescence, ages fifteen to seventeen; and late ado