Radio Partner Lance Tormey is Mr. Consistent when it come to racking up the steps.  His multiple daily walks have taken him the the equivalent of the length of the Amazon River.  However, for the recommended degree of fitness, maybe he could have stopped at a shorter distance, say like the Yakima River?

Newser reports  that researchers looked at thousands of women, and found the benefits associated with walking began in earnest at about 4,400 steps daily, and leveled off at 7,500, at least among older women.

Harvard study leaders aren't recommending against a full 10,000 steps. They say if you can get 10,000 steps, its great,  but if you're someone who's sedentary, even a very modest increase in movement delivers significant health benefits.