All races
IRONMAN 70.3Sep

IRONMAN 70.3 Knokke-Heist

Knokke-Heist, Flanders, Belgium

/5
0 athlete reviews

The race

A pure power course on the Belgian coast: flat polder roads, flat run, and wind as the decisive factor.

Course

SwimRiver

1.9 km swim in the sheltered Leopold canal / Zwin inlet water beside the coast, flat and current-free.

Bike250 m (820 ft) elev.

Pancake-flat one-lap 90 km bike through the Flemish polders — exposed, straight roads where North Sea wind is the only real obstacle.

Run40 m (131 ft) elev.

Flat two-lap 21.1 km run along the seafront dike and promenade of the Belgian coast.

Historical weather · Sep

Actual monthly averages from the last 3 years (Open-Meteo). Real race day may vary.

Loading weather…

Water temp uses athlete-reported values first, then official race data, then the marine archive (sea swims, measured at the nearest offshore point). Values tagged est. are modelled from recent air temperature for lakes and rivers, where no observational data exists.

Athlete reviews

0 total

No reviews yet. Be the first to share your race day.

🏁 What races have you completed?

Add races you've done and help future athletes with your experience.