TL;DR lardy middle aged bloke is going to try and do something he last did nearly 40 years ago.

Back in 1985, as a young sprog, I swum 100 lengths (2.5 km) for a swimathon, now nearly 40 years later I wanted to repeat it just to see whether I could. Although I can't choose the distance, I'm aiming to aim a tad higher than the formal 100 lengths and complete 128 lengths (2 miles), just because I can.

In terms of fundraising, in recent years I have had a number of friends and family, including my wife, who have had cancer. Funding research into the various cancers has improved the survivability and impact of them.