IRONMAN 70.3 Santa Cruz

Arrive early enough to get calm in the freshwater and feel your rhythm before the start. In the minutes before gun time, do a short, efficient warm-up (easy pace, a few controlled build strokes) so you’re not “under-started.” Line up based on your realistic pace—avoid the temptation to chase feet in the first seconds, because the start is about settling into your breathing and stroke cadence quickly.

Cover the 1.9 km course by focusing on smooth propulsion rather than frequent surges. With freshwater and variable temperature, start slightly conservative for the first few minutes to prevent an overreaction in your breathing, then build to a steady, repeatable pace. If there’s any chop or current on the day, stay patient—longer body position and fewer sprint strokes will keep you efficient. Fueling during the swim isn’t typically the goal; save your planned carbs and sodium for the bike and run where you can absorb them consistently.

Plan a smooth swim→bike transition: get your gear laid out, shoes staged, and focus on a quick, calm dismount into T1 flow. Off the bike mount line, accelerate progressively—don’t surge hard while you’re still “cold” from swimming. Get settled into your rolling-power/effort early, and protect your legs for the 90.1 km with 583 m of climbing.

Ride the 90.1 km rolling course by matching effort to the terrain—work the climbs just hard enough to stay controlled, and don’t overcook downhills into the next rise. With wind at about 3.9 m/s from the W, expect it to influence stability and comfort on exposed sections: hold a steady line, keep your upper body quiet, and avoid sudden steering inputs. Your fueling target is 90 g carbs, 750 mg sodium, and 650 ml fluid per hour—start hitting it consistently once you’re established, and keep the intake steady across both flats and rolling segments. If your stomach is sensitive, take smaller, more frequent sips/gels rather than forcing big hits when the effort spikes on climbs.

In T2, treat it like a re-start for your legs: take a moment to get your cadence organized before you fully commit. Off the bike, expect some stiffness—focus on quick feet and relaxed shoulders rather than forcing long, heavy strides. Your goal is to find a smooth rhythm early so the rolling terrain doesn’t turn into repeated surges.

The 21.4 km run is rolling with 81 m gain, so manage it like a series of controlled efforts instead of a flat-out course. With moderate heat (air temps roughly 14.1–23.9 C), start slightly conservative and let pace build as your body warms up; heat management matters even when conditions feel “fine.” Use the wind and sun to your advantage—on exposed sections, stay steady through discomfort and avoid letting breathing drive you into accelerations. Keep fueling consistent with your race plan: aim for 90 g carbs, 750 mg sodium, and 650 ml fluid per hour, adjusting slightly if you’re sweating heavily or if the heat rises.