Dates for the 2001 Pop Odyssey outing have been trickling in since the tour was first announced February 7. The 20 new shows keep the fivesome on the road through August 18.

The tour starts May 12 in Miami and plays major stadium from coast-to-coast before wrapping in Memphis, Tenn. Ticket prices range from around $35 to $75 for the dates that have gone on sale so far.

Lance Bass, JC Chasez, Joey Fatone, Chris Kirkpatrick and Justin Timberlake have certainly worked hard for their superstar status. The guys have maintained a grueling touring and recording schedule for more than two years.

The upcoming tour illustrates just how huge ‘N Sync has become. The group will play two shows each at Hersheypark Stadium in Hershey, Pa.; Foxboro Stadium in Foxboro, Mass., Giants Stadium in East Rutherford, N.J.; and Soldier Field Stadium in Chicago. Those shows alone could reach as many as 468,000 fans.

Some trend-watchers say the backlash against teen groups may already be underway but they’d be hard-pressed to find anyone willing to bet against ‘N Sync’s ability to sell out this tour.

The better question may be how high the stadium decibel meters will go when tens of thousands of female fans scream as what is arguably the most popular vocal group on earth takes the stage.