Some will run for the world record, some will run for cancer victims. Some will run with the "elite" pack and hope for prize money, while others will waddle, trot or jog hoping only to survive to the finish. But this Monday, April 17, the 110th Boston Marathon will fill the streets and suburbs of Boston as 20,000 participants take on the challenge to complete 26.2 miles and conquer Heartbreak Hill. Good luck to all who participate, and may you find the wind at your back.