Now in its third edition, Gay Swim Amsterdam’s annual open-water swimming festival is packed full of events, from the spectacular 50m sprint to the impressive 1500m, and the fun triathlon is always a blast. Anyone who can swim is welcome to sign up and dive in – the Amstel river is ready and waiting (and hopefully not too cold). Find the event, which is part of the Pride Amsterdam programme, on 4 August 2017.