# 2021 World Athletics Relays – mixed 4 × 400 metres relay
**Wikidata**: [Q106676574](https://www.wikidata.org/wiki/Q106676574)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/2021_World_Athletics_Relays_–_Mixed_4_×_400_metres_relay)  
**Source**: https://4ort.xyz/entity/2021-world-athletics-relays-mixed-4-400-metres-relay