World vs Japan
How the gap between the Japanese record and the world record has changed over time.
Men · Current Gap
+5:25
World1:59:30Sabastian Sawe
Japan2:04:55Suguru Osako
Women · Current Gap
+9:03
World2:09:56Ruth Chepngetich
Japan2:18:59Honami Maeda
Record progressions
World and Japan record progressions.
Men
Current
WR1:59:30Sabastian Sawe· 2026
JPN2:04:55Suguru Osako· 2025
Women
Current
WR2:09:56Ruth Chepngetich· 2024
JPN2:18:59Honami Maeda· 2024
The gap over time
How the gap between the world and Japan records has moved.
Men
+5:25Current
WR1:59:30Sabastian Sawe· 2026
JPN2:04:55Suguru Osako· 2025
Women
+9:03Current
WR2:09:56Ruth Chepngetich· 2024
JPN2:18:59Honami Maeda· 2024
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.