IRONMAN Gurye Korea

Arrive early, get your body warm with an easy jog or dynamic drills, then do a short, progressive swim warm-up focusing on long, smooth strokes. If seeding is available, place yourself based on your realistic 3.8 km pace to avoid early congestion. In the first few minutes, settle into a calm rhythm, keep your breathing consistent, and avoid sprinting through the first buoy turns—your goal is “unhurried power” that you can hold through the whole 3800 m.

You’re swimming 3800 m in freshwater where temperature varies, so treat the first 300–600 m as an acclimation segment: loosen your shoulders, keep your head position steady, and prioritize efficient stroke mechanics over speed. The N wind can influence surface chop near exits/turns, so expect some water movement and keep your sighting frequent and calm at every buoy. Fueling during the swim is typically minimal; instead, start your hydration plan immediately after you exit and transition through T1 without lingering. As you approach the final third, focus on maintaining form—if your hips drop, slow slightly and reset your kick to protect your energy for the bike.

In T1, get organized: ramp your heart rate down slightly by breathing, then transition quickly and smoothly into your bike gear without overcooling or overthinking. Before you fully commit to speed, do a quick “system check” (shoes on tight, hydration accessible, bottle(s) secure, aero position comfortable). The first 5–15 minutes should feel like you’re finding your gears—steady power, relaxed upper body, and building cadence so your legs are ready for 180 km rather than spiking effort early.

You’ll cover 180 km on an unknown profile, so treat the bike as a pacing game: aim for steady, sustainable effort and avoid surging on climbs or downhills. With wind around 3.6 m/s from the N, expect some crosswind/headwind variability depending on course direction—stay smooth in aero, keep a firm but light grip, and don’t chase every gust with sudden steering corrections. Your fueling targets should be consistent across the ride: 90 g carbs per hour, 750 mg sodium per hour, and about 650 ml fluid per hour. Use the wind and temperature (12.9–20.5°C) to your advantage—start slightly under control early, then lock in your routine so you never fall behind on calories or fluids. If you have any appetite swings, simplify: keep taking at the same intervals and let your stomach settle rather than trying to “catch up” later.

In T2, transition from bike to run by getting your steps under you quickly: rack focus on cadence and posture for the first few minutes. Your legs should feel heavy at first—anticipate it, keep your chest tall, and start with controlled intensity so you don’t spike early when the adrenaline is high. Aim to get your first kilometer feeling “smooth,” not fast, and then gradually tighten your rhythm as you settle into 42.2 km.

You’ll run 42.2 km after 180 km of riding, and with moderate heat and air temps roughly 12.9–20.5°C, it’s still possible to drift into under- or over-heating—watch how you feel rather than the clock. The N breeze of ~3.6 m/s can feel refreshing when you have it at your back, but expect it to turn into a cooler headwind in exposed sections; layer management and consistent breathing matter. Fueling on the run should mirror your established targets—keep carbs, sodium, and hydration on schedule so you’re not trying to recover energy later. As fatigue builds, protect your form: shorten the stride slightly if your hips tighten, keep your cadence steady, and resist the urge to sprint aid stations. Manage each aid moment efficiently—take what you can without stopping long enough to cool down, then refocus on rhythm and fluid intake.