Armstrong back in the saddle after banning

Lance Armstrong, branded a drug cheat and banned from cycling by the US Anti-Doping Agency, was back on a bike in Colorado on Saturday and loving every minute of it.

"Had a blast racing the #poweroffour this morning," Armstrong tweeted after finishing second in the Power of Four mountain bike race, a mostly local affair featuring tough climbs and descents on four peaks in the Aspen-Snowmass ski resort area.

"Got whooped up on by a kid young enough to be my son! Keegan Swirbul - remember that name!" added Armstrong, a father of five who finished second behind 16-year-old Swirbul in the race.