"We think there's room for another marathon in Manhattan, in the spring, " said Scott Dickey, chief executive of Competitor Group, whose Rock 'n' roll marathon and half-marathon series has grown from six races in 2008 to 33 in cities around the world.
Tens of thousands of music fans gathered in Washington Sunday to see Michael Jackson, 'N Sync, Aerosmith and an array of other pop stars at a marathon concert to celebrate America and raise money for victims of September's terrorist attacks.