This is a fun group of "senior" cyclists and have become like family. "Slow" and "fast" are relative terms, some start slower than others. It's my own fault that I always want to start and ride with the fast ones, when I could choose the slower ones instead and sometimes should. As I stated above, I sometimes get frustrated when they don't seem to know more about some technical aspects of riding, but hey they're waaaaaay healthier and stronger than the average Joe who does nothing and can barely get around. These "seniors" do metrics and centuries and have raised the bar on what "senior" means.
They definately sound like a fun bunch to ride with and being friends adds to the value of the ride. I would do everything in my ability to hang with them....and hopefully they will be considerate on the return rides