# Endurance triathlon competitions in Europe

> Live situation record from CLSTR: https://clstr.news/situations/endurance-triathlon-competitions-in-europe
> Updated: 2026-09-06T12:07:23.000Z. Sources: 5. Developments: 2.

In late August 2026, Dutch triathletes completed high-endurance races in Scandinavia. Jonno Hekman earned the ‘Ironman’ title in Kalmar, Sweden, while Ronald van den Berg achieved ‘Norseman Black Finisher’ status after completing the Norseman Xtreme Triathlon in Norway.

By early September, the focus shifted to the Ironman 70.3 Knokke-Heist, a cross-border event between the Netherlands and Belgium. Tom Defoort and Anna Reiff were the winners of the race, which served as a qualifier for the Ironman 70.3 World Championship. Organizers announced that following the 2026 edition, the event will transition from the 70.3 distance to a full-distance Ironman format in 2027.

## Timeline

### 2026-09-06: Tom Defoort and Anna Reiff win Ironman 70.3 Knokke-Heist

Tom Defoort and Anna Reiff won the Ironman 70.3 Knokke-Heist. Following high demand, the event will transition to a full-distance Ironman format starting in 2027.

3 sources. https://clstr.news/cluster/tom-defoort-and-anna-reiff-win-ironman-703-knokke-heist

### 2026-08-25: Dutch triathletes complete grueling endurance races in Sweden and Norway

Dutch triathletes Jonno Hekman and Ronald van den Berg successfully completed the Ironman in Sweden and the Norseman Xtreme Triathlon in Norway, respectively.

2 sources. https://clstr.news/cluster/dutch-triathletes-complete-grueling-endurance-races-in-sweden-and-norway

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Cite as: Endurance triathlon competitions in Europe. CLSTR, https://clstr.news/situations/endurance-triathlon-competitions-in-europe