IRONMAN / 70.3 Stats

Worldwide ironman_* and im703_* races.

Last updated: 2026年9月23日 00:54

1,327,719

Athletes (deduplicated)

3,471,049

Total results

2,068

Race editions

319

Events

Japanese IRONMAN Records 日本人IRONMANランキング

The fastest finishes by Japanese athletes at full-distance (Swim 3.8km / Bike 180.2km / Run 42.195km) IRONMAN-brand races, aggregated automatically from the result data this site holds. Every record links to its result-detail page.

Coverage: 2002–2026

IRONMAN-brand full-distance races only (non-IRONMAN long-course races such as Sado or Miyakojima are not included). "Japanese" follows the nationality printed in each race's results. Races or years absent from the collected data cannot appear, so this is not a definitive all-time list.

Last updated: 2026-09-23

Participation by year (gender × age)

IRONMAN / 70.3 result rows stacked by gender then age group (M cool / F warm). Green line: unique canonical athletes per year.

Distinct events held per year (by host country)

IRONMAN / 70.3 distinct event_ids stacked by host country (ISO 3166-1 alpha-2). Shows how the global footprint grew year by year and which countries host the most races.

Unique athletes by country × year (Top 12 + Other)

Canonical athletes (deduplicated) who raced IRONMAN / 70.3 at least once that year, stacked by residence country. Japanese prefecture codes (JP-XX) collapse to JP. Long-tail countries fold into OTHER.

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.

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.

Median bike split speed (km/h) by distance × year — Top 10 overall only

Bike-leg median (distance_km ÷ lap_seconds) restricted to the Top 10 overall finishers per race. The mid-pack median is dominated by fitness variance and washes out the equipment signal; the pointy end is where aero road / disc brakes / TT bikes / latest carbon wheels actually appear. Cells with fewer than 10 samples and obvious data-entry outliers (below 15 km/h or above 65 km/h) are dropped.

Most active athletes (Top 20)

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