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IRONMAN World Championship

About the race

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.

Typical weather

October usually brings cool, comfortable racing conditions, though an early cold snap or a late warm spell are both in play.

Who it favors

Triathlon favours the athlete who balances three fitnesses and cracks in none of them. Sharp transitions and disciplined pacing matter as much as being fast in any single leg.

Go fast, know why

Your Training, Finally Explained

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

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