Mixed 4x400m Relay World Championships 2024 Wiki. Bryce deadmon of united states in action during heat 1. Mixed 4x400m relay team smashed the world record by over a full second on friday evening, blazing to to victory in 3:07.41.

All the record did was place the americans in saturday’s final, where the record —. With the us and others skipping the event, italy claimed victory in 3:17.54 with a team of edoardo scotti, giancarla trevisan, alice mangione and david re.