I also live in Deerfield just south of Boca. Most of my riding is solo, up and down A1A (pretty safe in this area because you have bike lanes and cars go by you at 30-35mph). I will sometimes ride in Key Biscayne which now has great bike lanes but faster traffic. I used to ride in Homestead and the upper keys a lot but it's now too far for me...will definitely do the Escape to the Keys ride again this December and hopefully the Horrible 100 as well.