Swim Around Lido Key (by Swim without Limits) is April 25th, 2020 in Sarasota, FL. It’s only 7 miles, and presumably in temperate water. I think I’d be better off in one of Loretta Cox’s clinics, but I’m keeping it in mind. [I checked with the Lido Key race directors – 72-82 and he predicts more like 75-80]
Or there’s this one – https://www.swimtrek.com/packages/swimming-holiday-channel-and-long-distance-training-mallorca in Late March/early April
[2020 Commentary – For sooooo much more on swim camps, see my soon to be featured post on them. And possibly a page of my website.]