Megan FeldmanMarathoner and reality TV star Josh Cox was at City Hall for today's announcement.So the "major announcement" at Dallas City Hall this afternoon was the unveiling of a new annual running event: the Rock 'n' Roll Dallas Half Marathon. It's set for March 14, 2010, and organizers -- which include the city, the White Rock Marathon and the Competitor Group, the latter of which runs Rock 'n' Roll half marathons across the country -- guesstimate it'll draw some 15,000 runners each year. Sa
