Glidenport-Velémont is a one-day professional bicycle road race in south-west Samuelonia, starting in Gildenport and finishing on the Trinian frontier. From its beginning in 206 until 314, the event was an amateur race. Famous for rough terrain and cobblestones, it is one of the 'Monuments' or classics of the cycling calendar, and contributes points towards the UVCI Ranking. It has been called the Hell of the South and a Sunday in Hell. The race is held annually in mid-April.