World vs Japan
How the gap between the Japanese record and the world record has changed over time.
Men · Current Gap
+2.99
World1:40.91David Rudisha
Japan1:43.90Ko Ochiai
Women · Current Gap
+6.24
World1:53.28Jarmila Kratochvilova
Japan1:59.52Rin Kubo
Record progressions
World and Japan record progressions.
Men
Current
WR1:40.91David Rudisha· 2012
JPN1:43.90Ko Ochiai· 2026
Women
Current
WR1:53.28Jarmila Kratochvilova· 1983
JPN1:59.52Rin Kubo· 2025
The gap over time
How the gap between the world and Japan records has moved.
Men
+2.99Current
WR1:40.91David Rudisha· 2012
JPN1:43.90Ko Ochiai· 2026
Women
+6.24Current
WR1:53.28Jarmila Kratochvilova· 1983
JPN1:59.52Rin Kubo· 2025
What this chart shows
The closer the line gets to zero, the closer Japan is to the world record; when it rises, the world record is pulling away. The gap is plotted at every record change — world or national — so the line always reflects the gap at that moment.