World Junior Championships in Athletics
The IAAF World U20 Championships (formerly named the IAAF World Junior Championships in Athletics up to November 2015) are the world championships for junior aged athletes (19 years old or younger on 31 December in the year of the competition), organized by the International Association of Athletics Federations. It is held biennially since 1986.
The 2016 Championships were due to be held in Kazan, Russia until the IAAF's suspension of the All-Russia Athletic Federation, which prohibits Russia from hosting international competitions. This event was relocated.
as of 2016[update]
...
Wikipedia