Law 6.1 of the MCC laws of cricket state that the regulation length of a cricket wicket is 22 yards/20.12m/66ft in length and 3.33 yards/3.05m/10ft in width.
This changes for junior cricketers under the age of 11, who based on National Youth Cricket League’s rules should play on pitches 21 yards/19.2m/63ft long.