IRONMAN Tallinn

Arrive early enough to settle your breathing before you line up, then do a short progressive warm-up in the water/at the swim start area (easy pace to body-ready, then a few stronger strokes). Seed yourself based on your ability to hold a steady effort for the whole 3.96 km—find clean space early to avoid contact in the first minutes. At the start, focus on calm, efficient strokes and a smooth build rather than sprinting; your first 5–10 minutes should feel controlled so you can stay consistent through the full distance.

Cover the 3.96 km with a steady rhythm that matches the conditions: water is listed as about 20.3°C and wetsuit is typically legal, but confirm the official ruling on race morning in the athlete guide. Expect moderate-chop behavior rather than flat glass if there’s surface texture—your best advantage is smooth body position and frequent sighting so you don’t drift. Because your long-day fueling target is 90 g carbs/hr with 750 mg sodium and 650 ml fluid/hr, start planning to be ready to take your first fluids/gels immediately after T1 (don’t try to “catch up” mid-swim). Keep your effort even through the full swim so your legs aren’t overworked before the bike begins.

Your goal in transition is to make the swim→bike changeover efficient: manage gear in the same order every time (remove/secure goggles and cap, go straight into kit, and get shoes/clips set before you fully commit your effort). Expect the legs to feel “plugged in but not warmed up” for the first stretch—keep cadence smooth and start the build within the first minutes. Once you’re rolling, settle into your flat/fast pacing and don’t chase others; with 179.2 km ahead, early surges usually steal fuel and later force a higher heart rate.

Ride 179.2 km on a flat/fast profile with 534 m of climbing—this is a steady-effort course where aerodynamic efficiency and power discipline matter more than repeated accelerations. Wind is light at 4.9 m/s from the SW, so you’ll feel it more as a small constant influence than as violent gusts; use it to keep your effort consistent across any subtle headwind/tailwind changes. Fuel early and often: aim for 90 g carbs/hr, 750 mg sodium/hr, and about 650 ml fluid/hr across the bike, using your planned mix (gels/drink) so you’re not relying on willpower late. Drink regularly rather than “big sips,” especially when air temperatures move from about 14.1°C up toward the 21.7°C range; moderate heat can creep up and affect how your gut handles carbs.

In T2, be deliberate: rack your bike smoothly and get shoes on without rushing so you don’t lose time or balance. Off the bike, expect the first minutes to feel heavy and stiff—start your run effort slightly under what you think you can hold, then let your stride open up as circulation catches. This is where you set the tone: find a rhythm you can maintain for the full 42.2 km without spiking heart rate right away.

Run 42.2 km with the course elevation listed as unknown—so treat it like a pacing challenge where you manage effort through any hills by keeping your stride efficient and avoiding sprinting on “short rises.” With moderate conditions and air temperatures typically between about 14.1°C and 21.7°C, hydration and sodium become key: your bike fueling target (90 g carbs/hr, 750 mg sodium/hr, 650 ml fluid/hr) is a strong baseline mindset for how regularly you should be eating/drinking during the day—apply the same regularity on the run using your race plan. The 4.9 m/s SW wind can still show up during exposed stretches; keep your shoulders relaxed and adjust stride slightly to prevent overstriding into wind. If you feel your pace slipping, don’t panic—stabilize your breathing cadence and get back to your nutrition rhythm to protect the final third of the marathon.