Under Rule 6 of the 2026 Official Playing Rules of the National Football League (PDF pages 29–31), the kickoff is governed by two distinct restraining lines on the kicking side and two spatial zones on the receiving side. While the kicker kicks from the kicking team’s 35-yard line (or 20-yard line following a safety), all 10 other kicking-team players must line up with their front foot on the receiving team’s 40-yard line—distributed with at least two players between the sideline and the bottom (outside) of the yard-line number, at least two between the top (inside) of the number and the inbounds lines, and at least two inside the inbounds lines.
Setup Zone Alignment and the Landing Zone Movement Trigger
On the receiving side, Rule 6, Section 1, Article 2 defines the setup zone as the five-yard area between the receiving team’s 35- and 30-yard lines, and the landing zone as the area extending from the receiving team’s 20-yard line to its goal line. At least nine receiving players must line up in the setup zone, with at least five (or six if more than nine players are in the setup zone) placing their front foot on the 35-yard receiving restraining line. Neither the 10 kicking-team coverage players nor the receiving players in the setup zone may move—and no receiving player may initiate a block—until the kicked ball hits the ground or touches a player in the landing zone or the end zone, while the kicker may not cross the vicinity of the 50-yard line until that same contact occurs.
Why Landing-Zone Placement Controls the 20-Yard vs. 35-Yard Touchback
Rule 6, Section 1, Articles 4 and 5 enforce a sharp directional penalty on misses: any kick that first touches the ground or a player in advance of the front yard line of the landing zone is immediately dead. If a kickoff touches the ground or a player in the landing zone and subsequently rolls into the end zone to be downed or goes out of bounds behind the goal line, the touchback dead-ball spot is the 20-yard line. Conversely, if a kickoff lands at or beyond the goal line, strikes the uprights, or goes out of bounds behind the goal line without first touching the ground or a player in the landing zone, the receiving team takes possession at the 35-yard line. At any time during the game, the kicking team may also declare an onside kick prior to the start of the 25-second play clock under Article 6, shifting into a 10-yard restraining-line separation with a 15-yard onside kick setup zone.