IRONMAN 70.3 Puerto Varas

Arrive early, get your bearings in the freshwater if time allows, and plan a calm first few minutes to settle your breathing. Seed yourself by expected pace and don’t chase early contact—your goal is to establish rhythm before you start pressing. In the last 200–300 m, gradually increase cadence so you can exit under control rather than sprinting, then transition smoothly into standing up and getting your gear on in order.

You’re swimming 1,946 m in freshwater with temperature that varies, so prioritize comfort and consistent technique over power early. Expect that the first buoy laps may feel colder or tighter—stick to a steady stroke rate and keep your breathing smooth to avoid burning time and energy. If wind chop or surface texture shows up near the start/turns, don’t over-correct—stay calm and let the line of the course guide you. Fueling during the swim isn’t the priority; focus on a clean, efficient finish so you’re ready to start the bike with full intent.

Your swim-to-bike transition should be efficient but not rushed: feet find shoes, helmet on immediately, sunglasses if you use them, and take a few steady pedal strokes to wake the legs. As you mount, clear the transition traffic flow and settle into your cadence before you hit the first rolling sections. Plan to start slightly controlled for the first stretch so you can build consistently across the full 90.2 km without spiking effort on the early hills.

The bike is 90.2 km with 611 m of elevation gain on a rolling profile, so you’ll feel frequent changes in demand—ride steady efforts rather than sprinting each rise. With wind 6 m/s from the W, watch your pacing and effort on exposed sections: if you get a headwind, hold power steady; if it’s a tailwind, don’t let speed tempt you to surge. Fueling target is carbs 90 g per hour, sodium 600 mg per hour, and fluids 500 ml per hour—aim to start taking it early and keep it consistent across the whole ride, using your aid stations and your planned bottle order. Because air is cool-to-moderate (9–15.3°C) and heat is moderate, you still need full hydration: don’t “under-drink” just because it doesn’t feel hot.

In T2, focus on the first steps: your legs may feel heavy and your stride may want to shorten. Get your form tall and relaxed, then settle into rhythm over the early rolling meters before you try to push. As the run begins, keep effort controlled—21.1 km with 89 m of gain rewards pacing discipline more than early aggression. If you need to adjust what’s in your stomach (from bike fueling), do it quickly and subtly: small, planned reminders to keep taking fluid can prevent late run fade.

The run is 21.1 km with 89 m of elevation gain on a rolling profile, so expect repeated small accelerations and decelerations. Start steady on the first portion, then allow the pace to build gradually as you find a rhythm that matches your fueling. Because conditions are moderate heat with air temperatures around 9–15.3°C and wind from the W, you may feel better than you expect early, but don’t let that illusion push you into overreaching—rolling terrain can make effort creep up fast. Hydrate and fuel consistently from your race plan; the bike fueling target (carbs 90 g/h, sodium 600 mg/h, 500 ml/h) is a good benchmark for how deliberate you should be—use the same discipline on the run with your race-day nutrition schedule to protect late-race form.