To commemorate the London 2012 Olympics

Bars 13-16 & 17-20 depict the Olympic Rings,  
Bars 1-4 & 21-24 depict the Olympic Flame.  
Most other figures are simple forward movements which are similar to the many forward actions occurring in races.  
Steps: Skip change-of-step is used throughout except for Bars 17-20 when slip step is used.