IRONMAN 70.3 Aracaju-Sergipe

Start by settling quickly: do a short warm-up (a few minutes of progressive strokes) so your arms and breathing are ready before the first acceleration. Find your swim lane/seeding based on your expected pace, then spend the first 5–10 minutes easing into rhythm rather than racing the crowd. Have your plan for sighting and navigation (keep a steady cadence, pick a frequent landmark, and avoid chopping across other swimmers). If conditions end up wetsuit-legal or not, treat it as a fluid-control decision—focus on buoyancy and smooth starts either way.

You’ll swim 1909 m in open water around 28.4°C, with conditions typical of warm coastal races. Expect fairly easy buoyancy and less “cold shock,” so the main risk early is going out too hard while you feel good—anchor your pace and keep your stroke efficient. With warm water, you’ll still sweat during the swim, so think of hydration as part of the continuous plan: you’re not just “getting through” the swim. Once you’re into your rhythm, prioritize clean breathing and consistent sighting to reduce distance and drafting-chaos. Aim to exit with enough control that you can jump on the bike and start fueling immediately after T1.

In T1, focus on transitions flow over perfection: leave the swim stable, get your bearings, and move efficiently through the dismount line. Apply any gear you need quickly, then in the first minutes on the bike settle into a repeatable cadence and power target rather than sprinting from excitement. Mentally cue your fueling timing for the first bottle/gels immediately after you’re rolling—your goal is to start carb and sodium early while your legs still feel fresh.

The bike is 90 km with 199 m of elevation gain on a flat/fast profile, so speeds can feel deceptively high and pacing is everything. With wind from the E at about 6 m/s, expect it to influence effort—ride steady into the wind sections and avoid spiking power; when the wind helps, keep technique smooth and don’t coast so much that you lose rhythm. Heat is hot (air temp roughly 24.5–29.3°C), so drink and cool proactively: your fluid and carb plan is your main performance lever today. Target fueling per hour of 90 g carbs, 1000 mg sodium, and 800 ml fluid—aim to hit these consistently rather than chasing later. As the course stays fast, use the flat sections to lock into your sustained effort, and take hills (all small rises/rolling changes given the elevation profile) as opportunities to keep cadence smooth while maintaining your planned intensity.

In T2, get your legs moving before you fully “feel” them: as you rack out of the bike, focus on smooth turnover and quick steps for the first few hundred meters. Don’t try to sprint the opening straight—use controlled effort while your calves and hamstrings recalibrate. Have your first run-carry and hydration cues ready so you can start taking fluids and carbs on schedule rather than waiting until you feel thirsty.

The run is 21.2 km with 30 m of elevation gain and a flat/fast profile, so the course will tempt you to race early—especially in hot conditions. With air temperatures in the 24.5–29.3°C range and a persistent E wind influence from earlier, manage heat by staying disciplined with pace and using aid stations early and consistently. Your goal on this run is to convert the bike fitness into steady mechanics: short stride control, relaxed shoulders, and avoid overstriding as you fatigue. Fueling should continue in your planned rhythm; use the aid stations to take carbs and sodium regularly and hydrate to match your pre-set needs, rather than waiting for “emergency thirst.” Because the climb is minimal, the performance differences will come from heat management and how well you stay consistent during the middle miles, not from the elevation itself.