Triathlon

IRONMAN World Championship

OCT 10, 2026 26 days out Kona, HI IRONMAN

The pinnacle of long-course triathlon — 2.4 mi swim, 112 mi bike, 26.2 mi run on the lava fields of Kona, Hawaii. October.

Distances & categories

A marquee event, curated by OSO. Dates and entry can change — always confirm on the official page.

Go fast, know why

OSO reads your own rides, runs and swims and tells you what they did to you, not what they'd do to somebody else.

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