Hi Nancy! I completed a triatholon two summers ago and plan on doing some this summer. I did a short course which consisted of a 600 yd. swim, 9.5 mile bike, and 2.5 mile run...in that order. Most triatholons vary on distances. As far as the time between the events, transistions, it depends on what you are wearing....one of my friends has a triatholon suit, which means...she swims in it...then puts on her shoes and helmet and heads off on the bike. As for me...I wanted to wear shorts...so I had to take the time to put them on. I trained by bricking my workouts...I would combine two of the events together in a single workout. It was a lot of work for me and I was really nervous about the swim...just because I didn't 'learn' to swim until 3 or 4 months before the triatholon, but running across the finish line was the most incredible feelings I've ever had. Good luck!!!
Deni