IRONMAN 70.3 World Championship

Arrive early enough to settle your breathing before you enter the water. Do a short, easy warm-up and then keep your first minutes controlled—find feet or a line that matches your pace, and let the initial congestion pass before you commit. If you’re not in a clear lane, prioritize sighting and staying calm over forcing position immediately; a smooth 10–15 minutes usually sets you up for the rest of the swim.

You’ll race 1,900 m in freshwater where the temperature varies, so go by effort, not by how it feels at the dock—stay steady while you sort into your rhythm. Expect SE wind influence on the surface if it pushes chop or currents near the course edges; if you feel your line drifting, adjust your sighting timing and keep strokes consistent rather than chasing every shift. Fuel during the swim isn’t the goal; instead, think hydration and calm breathing so you can transition well. As you approach the exit, progressively raise your cadence for the last segment so you’re not “flat” coming into T1.

Plan your T1 to be quick and practiced: you’ll come out of the swim, get into cycling shoes smoothly, and take a moment in the first few minutes to confirm bottles are seated and accessible. On the bike start, get your cadence comfortable immediately and avoid a surge—your goal is to establish a strong, repeatable power/effort before the hotter, wind-exposed portions. With wind from the SE, position matters: stay aware of crosswind sections and keep your steering inputs smooth.

You’ll cover 90 km on an unknown-profile course, so your pacing has to adapt to what the road gives you—use power/effort to prevent early overreaching. With wind around 3.1 m/s from the SE and hot air temperatures, expect small but real headwind/tailwind shifts that can change how hard you have to work from one segment to the next; stay disciplined so you don’t overcook into the gusty moments. Use your fueling target from the start: aim for 90 g carbs per hour and 1,000 mg sodium per hour, with about 800 ml fluid per hour. If you’re trending hot, take more frequently in smaller sips rather than waiting until you’re thirsty, and keep sodium intake consistent so cramping risk stays managed. If you’re behind on drink early, “catch-up” carefully—dehydration is the bigger enemy than slightly slower absorption.

At T2, expect your legs to feel a little heavy at first—bike fitness will show up after a short settling period. Get off the bike and immediately focus on smooth mechanics: quick feet for the first few minutes, relaxed shoulders, and controlled breathing before you try to increase pace. Use the transition to take in any last planned hydration opportunities and then start the run with patience; hot conditions can fool you early.

You’ll run 21.1 km in hot air with a course profile that’s unknown, so assume there will be stretches that demand you pay attention to effort rather than just pace. The SE wind can still show up as changing “feel” across exposed sections—use that as feedback: if you feel yourself slowing into wind, stay within your plan rather than forcing. During the run, keep hydration and carbs consistent with the race’s targets you practiced; a common failure mode in hot races is under-drinking early and then trying to overcorrect later. Continue to drink on schedule and take carbs steadily so you can sustain output when the heat starts to tax breathing. If you start cramping or your cadence drops sharply, cool down behaviors (slow briefly, pour water over/into a hat if provided) can save the next stretch, but don’t completely stop your stride unless it’s a clear safety need.