At De Weerd in Roermond, participants can choose on the same September race day between running, swimming, or doing both in an aquathlon. The running distances range from a 600-metre bambino race to 1.5, 10, and 15 kilometres, while swimmers can enter 500 metres or 1 kilometre.
The aquathlon pairs a 1-kilometre swim with a 10-kilometre run, catering to children, casual entrants, and fitter multisport athletes within the same programme. Hundreds of participants race for a good cause, and the foundation behind it previously organised the Roermond City Swim. The organisers aim to encourage more people in the region to be active, with a playful Dutch slogan, “Spetterende Nieuwjaarsduik!”, suggesting its lively swim-side atmosphere.