IRONMAN 70.3 Dhofar
Saturday, 24 October 2026
IRONMAN 70.3 Dhofar is a fast, mostly flat course built around smart heat-and-wind management while you hit a steady 90g carbs/hour with high attention to sodium and fluid.
- 💧 Plan fluids toward 975 ml/h (cap near 1–1.2 L/h and let thirst be the ceiling). It typically runs hot through the afternoon.
- 🧂 Lift sodium to ~1250 mg/h.
- 🍚 Hold carbs at 80 g/h — heat slows carb absorption, so more isn't better.
- ⏱️ Sodium preload: ~500–750 ml with ~1,000 mg sodium, 60–90 min before the start.
Typical 10-year conditions, not a forecast. Water temperature and the wetsuit ruling are set on race morning — check the IRONMAN race guide →
Worlds qualification — slots TBAsee who qualified →Warm up with 8–12 minutes of easy swimming plus a few short pickups (short, controlled accelerations) so your stroke is ready when the horn goes. Seed yourself based on your actual ability to avoid getting boxed in early—this matters at 1,900 m where traffic can slow your rhythm. In the first few minutes, focus on staying calm, getting clean breathing, and finding a consistent sighting/line; avoid sprinting the first buoy.
You’ll cover 1,900 m in freshwater where temperature varies, so set expectations that it may feel cooler or warmer on the day. With winds around 4.1 m/s from the S, you may feel a drift effect on one or more stretches—use steady sighting to avoid gradually coming off your target line. Pace this leg for rhythm, not ego: steady effort early protects your run legs later. Fueling on the swim is optional at many 70.3s, but be ready to take your first planned calories and fluids promptly as soon as you’re safely on the bike.
Finish the swim composed—your goal is to emerge with form intact, not with your shoulders burning. If conditions feel choppy, stay efficient and keep your breathing consistent until the last buoy so the transition doesn’t turn into a scramble.
Plan a fast, organized swim→bike transition: keep your gear simple, know exactly where your nutrition bottle(s) and tools are, and mount quickly without forcing it. As you start the 89.4 km, settle your cadence and posture immediately—don’t chase power on the first stretch. Grab your first drink and first calories early so you’re not playing catch-up once the heat builds. In the first 10–15 minutes, dial your effort to match “flat/fast” speed goals while staying smooth—no hard accelerations that spike heat load.
The bike is 89.4 km with 385 m of elevation gain and a flat/fast profile—meaning you can move quickly, but you still must control output in the heat (air temperatures from 23.2–30.4°C) and the breeze. With wind 4.1 m/s from the S, expect some cross/tail/head-wind variability as you change direction or approach exposed sections; keep your steering smooth and avoid over-correcting when gusts hit. Fuel every hour with 90 g carbs and 1,000 mg sodium, and use fluid intake to stay ahead of thirst—your target is 800 ml per hour. Aim to spread this intake evenly rather than “big gulps” so your stomach stays calm and your watts remain steady into the run.
Approach T2 with enough calm control to run well: prioritize steady fueling and hydration over chasing a few extra seconds at the end. Your key bike takeaway is to arrive at the dismount hydrated and fueled (90g carbs + 1,000 mg sodium per hour with 800 ml fluid per hour) so the run starts on purpose, not survival.
Plan your bike→run transition so your legs feel “ready,” not dead: after you rack the bike, take 10–20 seconds to get settled, then start jogging at a conservative effort. The run is 21.1 km with 61 m elevation gain and a flat/fast profile—so it’s tempting to surge early; instead, focus on smooth cadence and relaxed shoulders. As soon as you start, take the next planned fluids and carbs to prevent a delayed crash later in the heat.
You’ll run 21.1 km on a flat/fast course (only 61 m elevation gain), which usually lets you maintain speed—however, the defining factor here is heat (23.2–30.4°C). Wind is moderate (4.1 m/s from the S), but the air temperature will still drive dehydration risk; use aid stations as structured hydration and keep your intake consistent rather than reactive. Stick to your fueling plan by continuing carbs at 90 g/hour and sodium at 1,000 mg/hour, with fluid near 800 ml/hour—adjust only if you get strong GI signs, but avoid skipping entirely. Because it’s flat, your pacing should be smoother than your ego: early too fast usually shows up as late fading, especially when it’s hot.
Finish the run by protecting your rhythm: keep your cadence steady, take fluids strategically, and resist the urge to “save it for later” if you’re already behind on hydration. The biggest run takeaway is to execute the same fueling logic you rode with—heat punishes missed targets.
In heat, “even effort” wins: follow your per-hour targets (90 g carbs, 1,000 mg sodium, ~800 ml fluid) and drink early and regularly rather than waiting for thirst.
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Weather is a 10-year climatology (typical, not a forecast). Course tracks are approximate, derived for planning — verify against the official course. Maps © OpenStreetMap. Not affiliated with or endorsed by the IRONMAN Group.