The Walk of Power

The Walk of Power is one of two optional levels from Rayman 2: The Great Escape where you race with Ly the Fairy through a clearing and across a river, picking up Yellow Lums across the way. The aim is to not beat Ly, who serves as only a guide, but to get to the end before the time runs out, and time can be added by walking over glowing lily pads that are scattered all over the place. When Rayman gets to the end, he is rewarded with three Golden Fists. It is accessed via the Sanctuary of Rock and Lava and requires a certain amount of Yellow Lums to enter.

In Rayman Revolution, this was renamed to The Time Race #2, and is accessed through any of Ly's three locations. Instead of picking up Yellow Lums, you have to pick up 25 Red Lums.