Charity walks are a wonderful way to improve your own health and raise money for worthwhile cause. Usually no longer than 5K, these family friendly, fun events get you outdoors and in the company of like-minded people who want to make a difference. Here's a list of walks/runs benefiting charities around the country:

American Diabetes Association's Step Out: Walk to Fight Diabetes
City of Hope: Walk for Hope to benefit cancer research
Down Syndrome Association Buddy Walk
Great Strides: Taking Steps to Cure Cystic Fibrosis
Leukemia & Lymphoma Society's Light the Night Walk
MS Challenge Walk
Walk to end Alzheimer's