Do they? The FAQ suggests that they are not aiming to do supersonic flight over land:

> Won’t the sonic boom be loud?

> Overture flights will focus on 500+ primarily transoceanic routes that benefit from supersonic speeds—such as New York to London or San Francisco to Tokyo. Overture won't generate a sonic boom over land cruising at subsonic speeds.

So what are the other 497+ possible routes (new York Paris also works) ? I read somewhere that after a Concorde test flight to Singapore, India complaint strongly and stopped the airway.