70.3

IRONMAN 70.3 Kraichgau

Sunday, 23 May 2027

IRONMAN 70.3 Kraichgau is a 1.895 km freshwater swim, an 88.4 km hilly bike with 862 m gain, and a rolling 21.2 km run—paced by steady fueling targets and a typical west wind.

· 231 days to go
Air
11–20°
typical
Wind
4.3 W
prevailing
Water
—
typical — confirm
Bike climb
+862 m
Fueling — per hour
typical conditions
90 g
carbs
750 mg
sodium
650 ml
fluid
  • 👍 Conditions are kind — the 650 ml/h fluid, 750 mg/h sodium and 90 g/h carbs baseline should hold. Fine-tune to your own thirst and sweat rate.
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Based on 10-year typical conditions (~20°). Baseline for a ~5.5 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 km44 km88 km271 m
88.4 km · +862 m climbing
T1 — swim to bike

Your transition flow should be: steady exit → quick towel/transition setup → shoes/kit sorted before you fully relax. Don’t try to “save” time by skipping essentials—make sure your bike mount is clean and your first minute on the bike is controlled. Off the swim, your heart rate may feel elevated, so start with a smooth 8–12 minute build (even if you feel good) and settle into your climbing rhythm early for the hilly 88.4 km course.

During the bike

The bike is 88.4 km with 862 m of elevation on a hilly/climbing profile, so expect repeated demand from changes in grade. With wind typical at 4.3 m/s from the W, use it to your advantage: on windy sections, keep your effort steady and maintain aerodynamic positioning; on calmer/lee moments, you can press the pedals briefly without spiking power. Fuel to the provided targets: aim for 90 g carbs per hour, 750 mg sodium per hour, and about 650 ml fluid per hour, distributed across the ride so you’re never chasing down hydration at the end of hard climbs. Prioritize taking in carbs and fluid consistently rather than waiting for “when it’s flat,” because the climbs will dry you out quickly and make late catch-up harder.

Closing notes

Two-bike takeaway: ride the hills by effort (not adrenaline), and keep fueling and drinking continuous so the last third isn’t a scramble.

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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.