6-16-2008 - For those of you that are participating in the Albuquerque Challenge, I have made a change to the rules. Staying within the spirit of the Challenge, I have added an additional activity other than walking. You can now ride a bicycle in order to earn mileage. However, one mile on a bicycle is only equal to one quarter of a mile of walking. I based the figure on a couple of resources that compared various activities to walking. Cycling one mile burned about 1/4th of the calories that you would burn walking a mile.