Tomoki ARASAWA

JapanJapanActive
Born
Nov 15, 2004 (21 years old)
Events
400 m · 300 Metres

Tomoki ARASAWA is a Japan sprinter, born on November 15, 2004. He competes primarily in the 200m, 400m and 4x400m.

His personal bests include 22.21 in the 200m, 48.85 in the 400m, 3:09.34 in the 4x400m and 35.00 in the 300m. He is currently active on the international athletics circuit, representing Japan.

Personal best · 400 m48.85
2026 season best49.14Apr 5, 2026
2026 season best
Personal best · 300 Metres35.00
Last competitionNAGASE CupSep 22, 2026 · 49.54
NAGASE Cup

As of Nov 13, 2026: 400 m 48.85, 300 Metres 35.00, 2026 season best 49.14 (Apr 5, 2026) · Last competition: NAGASE Cup, Sep 22, 2026, 49.54 · 21 years old

Personal bests

WA points calculator →
DisciplineResultAll-time
200mTokyo 2021Japan 200 m all-time list22.21*897 pts–
400mTokyo 2021Japan 400 m all-time list48.85928 pts–
4x400mGifu 2025Japan 4 × 400 m all-time list3:09.34–
300mAgeo 202535.00901 pts–

* Wind-assisted (> 2.0 m/s)

Progression

SeasonDisciplineResultWindDateCompetitions
2026400m 49.14–Apr 5, 2026The 59th Tokyo Big6 Track Field League
2025300m 35.00–Mar 18, 20252025 Spring Challenge Meet
2025400m 49.36–Apr 26, 202588th Tokyo Athletics Open Championships
20254x400m 3:09.34–Jul 13, 2025Japanese Relays Championships, Nagaragawa Stadium, Gifu
2024400m 49.28–Oct 13, 2024NAGASE Cup 2024
20244x400m 3:14.83–Sep 28, 202435th Kanto University Rookies Athletics Championships
2022400m 48.97–Aug 24, 2022Komazawa Olympic Park Athletic Stadium, Tokyo (JPN)
2021200m 22.21+2.4Sep 26, 2021Komazawa Olympic Park Athletic Stadium, Tokyo (JPN)
FAQ

Frequently asked questions

Tomoki ARASAWA's 400 m personal best is 48.85, set on Sep 23, 2021 in Komazawa Olympic Park Athletic Stadium, Tokyo (JPN).

Tomoki ARASAWA competes in the 400 m and 300 Metres.

2026 season best: 49.14, set on Apr 5, 2026. Last competition: NAGASE Cup on Sep 22, 2026, 49.54.