A mass bike start after the swim? That's interesting.

I'd find out exactly how much time you should have. And they are calling for us to be in the 50s next week, so hopefully it will be a *little* warmer for you.

If there really is enough time to completely change, I'd go for regular tights. I personally get really hot when I run, so I might wear just a long-sleeve jersey and then put a cycling jacket over top and then just take the jacket off for the run.

But have a backup plan in case you won't have time to change. In that case, sadly leg warmers and a jacket might be your best bet. Don't worry if you don't feel like the warmers are flattering -- it's a race, and people will be concentrating on their own thing.

Good luck -- and have fun!