List of world under-20 records in athletics
World U20 Records in the sport of athletics are ratified by the International Association of Athletics Federations. Athletics records comprise the best performance of an athlete before the year of their 20th birthday. Technically, in all under 20 age divisions, the age is calculated "on December 31 of the year of competition" to avoid age group switching during a competitive season. These age category records were formerly referred to as world junior records.Outdoor
Key:
ht = hand timing
a = automatic timing
+ = to longer distance
- = not officially ratified by IAAF
X = unratified due to inadequate doping control
OT = oversized trackMen
Women
Indoor
Men
Women
