Tri the Beast is being done on my training routes so I know them (run/bike) well; very picturesque very challenging. The roads can be busy if the weather is nice and slippery if it rains. Looks like it is their first year with this event...
I will be on nights that weekend so the unlucky will not see me that weekend
While this is all perfectly legal (those athletes named have been prescribed their usage as "TUE's") a quick Google search of for example "Predisnone endurance" (one of the named asthma meds prescribed to a very famous cyclist, allegedly) shows why this should be a cause for concern. The effect on amateur runners and cyclists of even short-term usage seems to be quite extraordinary, so one can only imagine what effect controlled, long-term usage must have on a professional endurance athlete.
All perfectly legal.
You would do better to look up the side effects of long term Prednisolone use. It is dangerous stuff in the wrong hands. I think its performance enhancing effects are questionable, it may be a 'Steroid' but it is very different from an Anabolic Steroid and should not have much effect on a healthy person.
There are hundreds of products out there, including drugs to mask other drugs along with experts who know how to cheat the tests. TUE's should be granted where necessary, but it does provide an opportunity to cheat. Salbutamol in particular is an interesting drug, used as a TUE....
I can only wish you good luck with this one I can swim 2 km comfortably in a pool but in open water it is a whole new game and I was last out of the water in my last (sea) tri.
I have to console myself with the fact that I can make up a lot of places on the bike and run. But to do this I need to not try too hard in the swim otherwise I get out of the water completely wrecked.
Try and take it easy in the swim, the swim is all about technique, by taking it easy you are likely to go faster and be still fresh for the bike leg