In 2007, several well-known websites and media outlets picked up the story, and participation increased to over 2400 acts from such varied locations as Tokyo, Auckland, Montreal, Antarctica and Oslo.
Challenge Cup | Challenge Tour | Challenge Anneka | University Challenge | Millennium Challenge Corporation | Diamond Challenge Sculls | USA Pro Cycling Challenge | Challenge | The Great Indian Laughter Challenge | Infinite Challenge | WRU Challenge Cup | World Club Challenge | Sa Re Ga Ma Pa Challenge 2005 | Real World/Road Rules Challenge: Fresh Meat | Grand Challenge Cup | Fletcher Challenge | FIRST Tech Challenge | Extra Challenge | Ultimate Poker Challenge | The Man and the Challenge | Rachel's Challenge | Power Challenge | Intercontinental Rally Challenge | Global Challenge | DARPA Grand Challenge | Challenge (TV channel) | Challenge for Change | Challenge Cup (UK Ice Hockey) | 1991 Norstar Bank Hamlet Challenge Cup | World Challenge |