More than 4,000 runners turn out Saturday for the 39th annual Mayor's Marathon and Half-Marathon, which also includes a marathon relay, 5.6-miler and 1.6-mile Youth Cup. Former UAA All-America runner David Kiplagat, the defending men's marathon champion, is expected to be joined by his brother, Solomon Kandie, as the Kenyans aim to make an assault on Michael Wisniewski's 2009 course record of 2 hours, 22 minutes, 29 seconds.