Welcome, adt and trek1500! Congrats on your first duathlon. Please come check out the Triathlon board on the TE site, too. That would be a good place to post training questions.

I did my first 6 triathlons on my Marin Larkspur hybrid. I wanted to be sure I was really going to keep going with this thing before I upgraded the bike. I can't believe how much lighter and faster my new bike is. It's a Bianchi Veloche, and when the rider's in good shape, the bike goes like the wind!