World Athletics has announced a series of rule changes aimed at improving safety, fairness and race organisation in indoor track events.
The updated regulations affect the indoor 400 metres, indoor 800 metres and short-track relay races, and will be implemented in phases from 2025.
New Indoor 400m Race Format
At the World Indoor Championships, the indoor 400m will now be contested using a revised format.
Each heat will feature four athletes competing in lanes three to six only, with lanes one and two left vacant.
World Athletics says the change is designed to reduce the disadvantage faced by athletes drawn in the tightest inside lanes, while also improving overall race quality and the viewing experience.
Indoor 800m Breakline Adjustment
A new breakline has been introduced for the indoor 800m event, effective from 1 November 2025.
Under the updated rule, athletes will break from lanes at the same point used for the 400m, approximately 165 metres after the start. Previously, the breakline was positioned around 65 metres into the race.
The extended distance before the break is intended to give athletes more time to spread out, reducing congestion and enhancing safety.
4x400m Relay Short Track Takeover Rule
Changes have also been made to short-track relay takeovers, effective from 1 March 2025.
The revised rule applies to the 4x400m, 4x400m mixed and 4x800m events.
Athletes waiting to run the second, third and fourth legs must now line up in the correct running order, from inside to outside lanes, as their teammates cross the finish line to begin the final lap.
The process will be overseen by a designated official to ensure smooth and safe exchanges.
Focus on Safety and Fairness
World Athletics said the updates are part of ongoing efforts to enhance athlete welfare, ensure fairer competition and improve race flow in indoor events.
The governing body believes the new regulations will lead to safer racing environments and a better experience for athletes, officials and spectators alike.
These rule changes will be rolled out gradually, with full implementation across relevant competitions in line with the stated effective dates.
