[QUOTE=skywalkerbeth;595057@indy: I'm not sure. I don't get the sense it's a fast cadence - 90 sounds awfully quick. Cadence is one full go 'round, right? How do you know, other than counting? I have a garmin watch, not a bike computer. I'm not entirely convinced that a quicker tempo wouldn't tire me out more quickly. So far my stamina is good even if I'm not fast... What gear should I use? The lowest? I probably do use too hard of a gear during the flats... probably in the middle (and then really make it easy gear on the hills).[/QUOTE]

skywalkerbeth, if you already have a Garmin watch, you can buy a cadence sensor to work with it. I have a Garmin Forerunner 305 and I bought a cadence sensor for it on Amazon for about $40. I really like being able to see what my cadence is and shift to keep it in the zone that I want. You can even set your watch up to beep at your if you're pedaling too fast or too slow.