Chihiro Obata won the boys' 5000 m race walk, clocking 20:07.28. Mirriam Njeri dominated the girls' 3000 m, finishing 7 seconds ahead of Nami Kawakami. Several athletes achieved new personal bests in challenging weather.

Other notable winners included Yui Yoshinaga in the girls' 100 m and Sekito Matsushita in the boys' 100 m. Nana Ishihara excelled in the girls' long jump, and Rinoa Akagi won the girls' javelin throw. Mirei Eguchi led the girls' heptathlon after Day 1. Read more racing coverage.

The event saw intense competition, with many athletes setting new personal records. The hot and humid conditions added to the challenge, making the performances even more impressive. Related: Glasgow 2026 Mile Final: A Star-Studded Showdown.

This original Runner World brief is based on reporting from Japan Running News. Visit the source for its complete reporting, context and any later corrections.