troubling reports. <pause for stinger>>>>jaciel cordoba: the countdown is on... just a few days left until the runner's world half marathon and festival.. the races are this weekend, on saturday and sunday!>>eve russo: we've been following five contestants who won the chance to participate in the 5k, 10k, and half marathon.. this morning, we're taking a look at what to expect for the weekend.. and we have an unfortunate update about one of our runners... 3 3 3 runners... 3