ONK Open Water Zwemmen Gaasperplas takes place on Sat, Sep 12, 2026 in Amsterdam, Netherlands.
- Date
- Sat, Sep 12, 2026
- Start
- Amsterdam 🇳🇱
- Level
- Pro peloton
Hosted at the Gaasperplas in Amsterdam-Zuidoost and organized by Zwemvereniging Het Y, this open water swimming event serves as the national championship (ONK) finale of the Dutch open water circuit.
Official event pageWhat this race demands
This open water swimming championship demands high aerobic capacity and efficient sighting skills over an unspecified race distance.
Aerobic Capacity
As a national championship finale for open water swimming, the event requires sustained high-intensity swimming effort.
Open Water Navigation
Competing at the Gaasperplas requires constant sighting and maintaining a straight course without the visual cues of a pool.
Your road to race day
Race day at ONK Open Water Zwemmen Gaasperplas is 3 weeks away. This is how a coach divides that time. The first phase starts now.
01Taper2 weeks · Aug 23, 2026 – Sep 5, 2026
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
02Race week1 week · Sep 6, 2026 – Sep 12, 2026
Openers, rest and logistics. The work is done; the job now is arriving fresh.
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