Can I swim an event outside my age or gender category?

Yes. The Sunday events (5-8) are age-group and gender specific for prizegiving only, so anyone may enter them if needed, for example a parent swimming with their 13-year-old.

But you're only eligible for a position or prize in your own category if you swim the event for that category. A 32-year-old man who swims Event 5, for instance, won't be included in the Event 6 results.

Category medals are awarded only from Sunday's races. Swimmers aged 71 and over who want to be in the category medals must swim on the Sunday; Event 1 on Saturday is the one that gives 71-and-over swimmers an extra 15 minutes.