IRONMAN 70.3 Pucon

Arrive ready to move quickly: get a short, easy warm-up in the water (or pool if available) so your shoulders and breathing are calm before the start. Seed yourself based on your swim pace so you’re not constantly stopping/starting in traffic. For the first few minutes, focus on clean technique and controlled effort—use strong, repeatable strokes rather than sprinting to “find space.” If you’re unsure about comfort, start slightly conservative and build over the first segment; the course should open up as swimmers spread out.

You’ll swim 1,775 m in freshwater where temperature varies, so treat the first strokes as a feel-out period and aim for smooth cadence rather than power spikes. Plan to stay sighting-focused and keep your line steady—Pucon’s swim support is typically about staying composed when the pack compresses, then settling into rhythm. Because the water temperature can range, manage your breathing early: breathe more often than you think you need to avoid building tension. Fueling-wise, you generally won’t take in calories during the swim, but make sure you’re ready to transition into hydration and carbs immediately after the mount of the bike.

Your T1 flow is simple: exit swim cleanly, move efficiently through your transition area, and do a quick equipment check as you go (helmet secured, shoes set, hydration accessible). As soon as you mount, settle into a steady cadence and don’t chase speed immediately—use the first stretch to find your breathing, stabilize power, and get your fueling started. Mentally, think “flat/fast” early, so your first 20–30 minutes should feel controlled rather than explosive. Prioritize smooth starts and steady effort so the later climb segments aren’t where you first discover you’re overcooked.

You’ll ride 92 km on a generally flat/fast profile with 381 m of elevation gain, so the course invites rhythm and consistent output. Expect wind from the W at about 4.4 m/s—this usually means you’ll have headwind/tailwind swings, so avoid overreacting with sudden surges; keep your effort level even when speed changes. With moderate heat (air 12.9–22 C), start hydrating early and don’t wait for thirst—small, frequent sips help you stay steady. Your fueling target is 90 g carbs per hour with 750 mg sodium per hour and about 650 ml fluid per hour; aim to hit that within the first hour and then maintain it through the full ride. Use the flat sections to lock in your nutrition routine, then use the climbing/rolling moments to stay aerodynamic and composed rather than sprinting.

Your T2 focus is legs and order: as you rack from the bike, expect your first steps to feel “stiff” and slightly underpowered. The key is to make the first 5–10 minutes about rhythm—shorten the stride slightly if needed, keep your cadence high, and let the legs wake up. Keep your hydration plan ready; moderate heat (12.9–22 C) plus a hilly course means you’ll want to start drinking before you feel behind. If you planned any gels/chews for the run, have them accessible so you don’t delay when you feel settled.

You’ll run 21.8 km with 187 m of elevation gain on a hilly/climbing profile, so your pacing must respect gravity on the uphills. Start controlled—let the first climbs be a smooth “power into tempo” moment rather than a race. Wind isn’t just an issue on the bike; any exposure on the run can change how hard a steady pace feels, so use effort and breathing as your primary governor. With moderate heat, keep fluids regular; don’t wait for thirst on the climbs or when you transition back to shaded/colder pockets. Your run nutrition should continue from the bike plan (aim for your carb and sodium routine as instructed by your race-day strategy); if you need gel/solid timing, consume at consistent intervals after you’ve found your rhythm rather than only when you’re already fading.