Japan-Domestic Stats

Triathlon events (swim-bike-run) from domestic JTU-series races plus IRONMAN / 70.3 editions held in Japan. Duathlon, aquathlon, etc. excluded.

Last updated: 2026年6月16日 16:34

86,289

Athletes (deduplicated)

288,557

Total results

507

Race editions

Events

Participation by year (gender × age)

Result rows stacked by gender then 5-year age group (F warm at the bottom, M cool on top). Green line: unique canonical athletes per year. Rows without a recorded age group, plus JTU custom Elite / U23 / Open brackets (17-40, 18-24, 19-40, …) that don't fit a 5-year cohort, are dropped.

Distinct events held per year

Count of distinct events held that year. Multiple editions of the same event in the same year still count as 1.

Finishers by distance category

Results with status = finished, grouped by distance code.

Top 20 events by participation

Events ranked by total result rows across every edition.

Top 20 prefectures

Distribution of canonical athletes located in a Japanese prefecture who have raced a domestic triathlon.

Finish rate by distance

Finish rate per distance category (finishers / starters; DNS is excluded from the denominator). Categories with fewer than 50 starters are excluded.

Formula: finish rate = finishers ÷ starters (starters = all entries − DNS). Athletes who started but did not finish (TOV / DNF / DSQ) stay in the denominator; 1 − finish rate is the non-finisher share.

Median finish time by distance × year

Median (50th percentile) of finishing times across all finishers. Year × distance cells with fewer than 30 samples are dropped.

Most active athletes (Top 20)

Race count per canonical athlete (deduplicated). Birth year shown as BY for disambiguation.