Thanks all, the Specialized saddle did indeed come from the LBS back when I first bought the bike and took it in for some work. Yes 16 miles may not seem long to some folks, but it's pretty long to me right now. I may go longer one day, but right now I don't foresee 40, 50, 60 miles rides in my near future. I plan on eventually trying to commute to work (29 miles round trip) but for right now I just like to ride around town or 10-15 mile group rides.
Later on if I get more seriously into it I may get more of a road bike for 50+ mile rides, if that's the direction I decide to take.