Van der Weijden tried in August to have a swim to make it through all eleven Frisian cities to raise money for cancer research. He got 4.7 million euros. The swimmer, the trip could not accomplish it, because his body could no longer, just before Dokkum, he had to give up. He has 163 kilometres swum in 55 hours. That equates to 30 euro per meter.
The other cities that Van der Weijden visiting are Amsterdam, Apeldoorn, Zwolle, Doetinchem, Eindhoven, Breda, Utrecht, Rotterdam and Groningen.