My dad directed me to an article about Alice Telford.
If you have a moment, you should check it out. It's a great story and a very inspiring one.
Here's a snippet:
She’s petite, quick to smile, and full of energy. In spite of a knee replacement, some arthritis issues and a recent 86th birthday, Alice keeps up a schedule that would make Jack LaLanne proud. She begins her mornings by carefully working on her knee, putting it through a little physical therapy to aid its recovery from the surgery, then she climbs stairs—a full sixteen flights before breakfast.
Oh and by the way, she had to recently reduce her maximum daily riding distance to ONLY 70 miles.
You can read the rest of this great story over at Cycle and Style.