IRONMAN

IRONMAN Texas

Saturday, 24 April 2027

IRONMAN Texas is a fast, flat 181.1 km bike and a 42.2 km run that rewards steady power and disciplined fueling in moderate heat with a steady SE breeze.

· 202 days to go
Air
17–26°
typical
Wind
5.3 SE
prevailing
Water
—
typical — confirm
Bike climb
+239 m
Fueling — per hour
typical conditions
90 g
carbs
1000 mg
sodium
+250 mg vs typical
825 ml
fluid
+175 ml vs typical
  • 💧 Plan fluids toward 825 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 ~1000 mg/h.
  • 🍚 Keep carbs at 90 g/h — don't add more in the heat, and keep your drink mix dilute so fluid still empties fast.
  • ⏱️ Sodium preload: ~500–750 ml with ~1,000 mg sodium, 60–90 min before the start.
Build your fuel plan — which gels, how many per hourFuel tool →
Based on 10-year typical conditions (~26°). Baseline for a ~12 h finish, 70 kg athlete. Scale to your own body mass and sweat rate.

Typical 10-year conditions, not a forecast. Water temperature and the wetsuit ruling are set on race morning — check the IRONMAN race guide →

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0 km91 km181 km51 m
181.1 km · +239 m climbing
T1 — swim to bike

Transition flow: from T1, get your legs moving immediately—prioritize a clean, repeatable routine for helmet/gear setup, then mount smoothly. Keep the first minutes purposeful but controlled: bring cadence online gradually so you don’t spike heart rate right after the swim. Quick clothing/gear check matters—gloves on, eyewear clear, and hydration access where you can grab it without looking down constantly. Mentally set a ‘flat/fast’ objective: smooth power, aerodynamic posture, and calm steering in the SE wind you’ll feel across sections of the course.

During the bike

The bike is 181.1 km with 239 m elevation gain and a flat/fast profile, so the course is designed for sustained speed and steady pacing. With wind at 5.3 m/s from the SE, you’ll likely feel stronger headwind/tailwind segments—stay stable in your effort and don’t overreact to the speed changes. Use the flat terrain to hold a consistent output; if you surge to chase speed into the wind, you’ll pay later. Fueling target during the bike is carbs 90 g/hour, sodium 1000 mg/hour, and fluid about 800 ml/hour—start hitting this early and keep it scheduled so your gut has time to settle. Take in fluids regularly (don’t wait until you’re thirsty), and use sodium intentionally to support sweat loss in moderate heat.

Closing notes

On this flat/fast course, consistency beats hero rides—hold steady effort, respect the SE wind’s speed swings, and execute your 90 g carbs/hour, 1000 mg sodium/hour, and ~800 ml/hour plan.

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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.