Mimi, my legs are my limiting factor. Always have been, always will be. I have good days and bad days. Some days I feel like I need to Gu in order to get up the stairs in my house!

I got to the point where I was overstretching and aggravating all kinds of stuff, so there is a fine line. I am now working on changing how I pedal in order to take some of the work off of my calves and quads. I wish someone had given me pointers about all this stuff years ago. I have some pretty significant muscle imbalance going on, which affects my running as well.

So it could be strength, it could be imbalance, it could be that you just need your new bike. Be as strong as you can be, keep up the gentle stretching, and make sure you are getting adequate recovery (the latter is my biggest failing). If I rode 62 followed by 25 followed by 5 commuting days of 8-12 days a piece I'd need a little recovery!