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70.3

IRONMAN 70.3 Erkner

Sunday, 13 September 2026

IRONMAN 70.3 Erkner is a fast, mostly flat course where steady power on the 88.6 km bike and consistent fueling carry you through a 21.6 km run in moderate conditions with a light-to-moderate W wind.

Air
13–22°
typical
Wind
5.1 W
prevailing
Water
typical — confirm
Bike climb
+100 m
Fueling — per hour
90 g
carbs
750 mg
sodium
650 ml
fluid
Baseline for a ~5.5 h finish, 70 kg athlete, moderate conditions.

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 →
0 km44 km89 km49 m
88.6 km · +100 m climbing
T1 — swim to bike

Transition flow: get off the swim fully moving, rack quickly, and make T1 efficient—hat/gear on, helmet secured, shoes on, and bottles filled/checked in a clean sequence. As you mount, settle into a stable cadence right away; the flat/fast profile means it’s easy to overshoot early, especially with fresh legs. Before you pick up speed, confirm your planned gearing and that your nutrition setup is reachable without fumbling.

During the bike

Ride 88.6 km with 100 m of elevation gain on a flat/fast profile—this is a course where pacing is everything. The wind is about 5.1 m/s from the W, so expect it to feel more “present” on sections running into it and flatter when sheltered; don’t spike power when the wind increases—hold steady effort and let speed fluctuate. Aim to match your fueling target through the bike: 90 g carbs per hour, 750 mg sodium per hour, and about 650 ml fluid per hour. Take it regularly rather than in big hits—use consistent bottle sips and plan your stomach for moderate heat. Because the course is fast, avoid going too hard early; save enough for the run by keeping power controlled, especially in the first portion of the ride.

Closing notes

When you’re within range of T2, start to shift your mindset from “speed” to “run readiness”: stay smooth in the saddle, secure your last drinks, and ensure you can dismount without rushing your lower-body mechanics.

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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.