I can not say enough great things about the Mexico City Bike Tour. Firstly, the couple that leads the trip could not be nicer to each other and to their clients. The trip is very safe. One leader is in the back and the other is in the front. You see many neighborhoods in a short period of time. You go down many tree lined streets. They stop for lunch and at local markets as well as the Frida Kahlo Museum. Because they are tour guides, you don't wait on any lines at the museum.
We recommended it to other friends who took the tour the next day and they felt exactly the same way. When we return to Mexico City in December, we are doing it again with all four of our kids. Love it. You must do it too!!!