Michael Johnson
#2 · men's 400 m · United States
Men's 400 Meters
American athlete. men's 400 m mark of 43.40 seconds at Saint-Denis on August 7, 2024, the personal best on the World Athletics all-time list.
Quincy Hall's race time is 43.40 s, an official figure.
Race time
43.40s
men's 400 m, Saint-Denis. One personal best per athlete.
Quick answers
Quincy Hall's race time is 43.40 s, an official figure.
Quincy Hall is labeled Official. Ratified by a governing body such as the FIA, World Athletics or Guinness World Records.
The figure cites World Athletics, “400 metres men, senior, outdoor all-time list.”
Quincy Hall is 5th of 9 on Fastest Men's 400 m.
Mechanism
Quincy Hall's mark is a men's 400 meters of 43.40 seconds at Saint-Denis on August 7, 2024. That is one lap. Dividing 400 meters by the official time is about 20.6 mph. No 200-meter split is given, so the pace inside the lap is not described here.
Quincy Hall's 43.40 is the time from the gun to the finish of a full lap at Saint-Denis on August 7, 2024. A 400 is long enough that how the effort is divided matters, and this entry does not keep the split that would show it. What counts is the official time only.
400 meters in 43.40 seconds is about 20.6 mph for the whole lap. That is much slower than a 100-meter average because the distance is four times as long. Quincy Hall's figure is the personal best on the all-time list, not a radar peak on the back straight.
Provenance
Claimed, measured and official figures side by side, each with its source. The ranked figure is marked.
men's 400 m, Saint-Denis. One personal best per athlete.
Reference
Context
Quincy Hall's ranked men's 400 m time is 43.40 seconds at Saint-Denis on August 7, 2024. World Athletics, Athletic Stats (refreshed October 5, 2026) and Track & Field News say that time and date.
The list is one event. A mark from another distance is a different page, with its own slug. Wind above +4.5 mph (+2.0 m/s) is not legal. Lower is faster.
Every report is read by a person, and corrections are dated on the page.