A few years ago I looked at the ages for as many of the entrants as I could at a WOC and a European Champs and came up with categories based on ages:
Very young = under 21 (3 percent of the field)
Young = 21-25 (37 percent of the field)
Prime = 26-30 (39 percent of the field)
Old = 31-36 (13 percent of the field)
Very old = 36 and up (8 percent of the field)
As best I can tell, the US team has two young runners and four old/very old runners.
