On presentation of your bib number, you can hand in your clothing at the Heijermansstraat, between the Dam tot Dam Park and the finish. You get a sticker on your bib number that corresponds to the number on your plastic bag so you can pick up your bag again after the race. Drop off and pick up is possible between 18.30 and 22.30.
You can only find changing facilities in Zaandam at Sporthal De Struijck, close to the Dam tot Dam Park (no shower facilities). Participants of the business run can use the special business changing tent in the Dam tot Dam Park.