If you do a trick on a jump you can completely avoid a POW block item's effects.
Submitted by: Josh DeMay How to Avoid POWs It's possible to finish the race in well under a minute using this technique. You can continue to make those short, constricted laps and each one will count as a full lap around the track. Perform a lap around that rock outcropping, making sure to touch the point on the far end (closest to the finish line). Now you need to keep moving, so that you don't wind up in the lava. If you do it properly, you'll land on the stone ledge with the giant '?' symbol. Using a boost, launch through that opening and use a trick while airborne. When you reappear, drive through an area to the side, where the stone wall dips slightly along the track's left side. After the race begins, immediately turn around from the starting line and drive back, directly into the lava. First, make sure that you are using a bike and you have drifting set to Manual.