balaena

Very helpful...thanks! And, I've wondered about the men's vs. women's bikes...had no idea the components were less high end on the women's bikes. That's really annoying. I'm looking at Specialized ..Ruby...and the Trek Madone.

I'm 54 and have been a runner since my early 20's. I've had to back off some in my 50's due to some other sports-related injuries, but I don't see any reason why your Mom can't start running in her 50's. She should take it slow and begin - like most beginner runners - with walk/run combinations. Many runners use heart rate…