Well, that's the end of the road, so maybe. From where are you starting? Are you going up and back? I know A1A from Ft. Lauderdale to Palm Beach a little too well (it's almost the only road I ride), and can probably tell you.

I met some interesting cyclists on the road: two guys and a woman, who had left West Boca at 4AM to do 120 miles as part of their training for Ironman Panama. I also met a club that rode up from Hialeah. When they got to the pier, they all jumped in the water, and I took pics for them. They were having a blast. They also had a big ole truck pick them and all their bikes up, as well as bring food. I got in on the free food.