IRONMAN 70.3 Poreč

Arrive early, hydrate, and do a short ramp-up warm-up in the water if available (or dynamic warm-ups poolside) so your first strokes feel smooth. Seed yourself by expected pace—if you’re unsure, err slightly to the faster side but avoid getting trapped in a slow pack. In the first few minutes, focus on calm breathing, clean line choices, and steady effort; resist sprinting for position before your rhythm is established.

You’ll swim 1,893m in freshwater with temperature that varies, so plan for a “controlled start” and settle into a sustainable cadence rather than going out hard. Sight frequently and keep your stroke efficient—rolling bumps and wake from other athletes can cost more energy than you think over the full distance. With race wind at roughly 4.3 m/s from the E (typical of a cross/side component on the course), expect minor drift—use every opportunity to correct early with your sighting rather than fighting it at the end. Fueling is limited during the swim, so your goal is simply to finish feeling like you could do the bike, then begin drinking immediately as you transition to keep hydration going.

For T1 (swim→bike), practice a clean flow: get out, move quickly but safely through your gear, and start spinning your legs the moment you’re stable. Spend a few extra seconds checking you’re clipped in securely and set your preferred gearing before you accelerate. The first 5–10 minutes should be about finding rhythm on the rolling terrain; don’t chase speed—build power gradually so the later climbs don’t steal your run. During the transition from swim legs to bike legs, expect your cadence to feel a little “heavy” at first; start with easy-to-moderate watts and a smooth cadence ramp.

Bike distance is 90km with 641m of rolling elevation gain, so pacing is more important than chasing a flat-course speed. Use the wind (about 4.3 m/s from the E) to your advantage: on head/side components, don’t surge—hold steady power and let your position and aerodynamics do the work; when it’s more favorable, you can keep the same power and allow speed to rise. Target your fueling plan consistently: about 90g carbs and 600mg sodium per hour, and about 500ml fluid per hour—set your intake timing so you’re not behind after the first hour. With moderate heat (air temp roughly 12.7–19°C), you can still dehydrate—sip regularly, and don’t wait until you feel thirsty. Keep your effort controlled on the smaller rises so your legs stay springy; the run will feel much better if the bike ends at “strong and steady,” not “surprised and spent.”

For T2 (bike→run), your first priority is to get moving without “panic-gripping” the effort. Expect your legs to feel tight or slightly disconnected at the start—focus on quick, relaxed steps for the first few minutes while you find your stride. Transition smart: if you need a moment to stabilize posture and breathing, take it, but don’t overthink it. With a flat/fast 21.1km profile and only 56m gain, you should be able to build smoothly rather than grind—plan to start controlled and let rhythm grow.

The run is 21.1km and flat/fast with only 56m of elevation gain, so your limiting factor will be heat management, energy availability, and how well you resisted overreaching on the bike. Continue taking in fluids and carbs according to your race fueling plan; the provided targets for fueling are 90g carbs and 600mg sodium per hour with about 500ml fluid per hour—use aid stations early and consistently so you don’t crest the halfway mark under-fueled. Moderate heat (air temp roughly 12.7–19°C) still means you’ll benefit from regular sips and sodium—don’t rely only on thirst. Wind can matter even on a “flat/fast” course—when it hits you from the E, you may feel it most on open sections; stay smooth and avoid turning the headwind into extra pace. Your win condition is steady form: cadence/stride efficiency, quick posture, and controlled breathing as the effort ramps.