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Naotaro KOBAYASHI
400mH
300mH
 Japan
Born16 AUG 2008 (17)
Naotaro's code15253132
Personal bests
resultResult
56.18
dateDate
24 APR 2026
scoreScore
844
competitionCompetition & venue
Komazawa Olympic Park Athletic Stadium, Tokyo (JPN)
resultResult
40.02
dateDate
19 JUL 2025
scoreScore
827
competitionCompetition & venue
Komazawa Olympic Park Athletic Stadium, Tokyo (JPN)
* Not legal
Season’s bests (2026)
* Not legal
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