Gain max run speed with Speed Booster unequipped (extra run speed $2.0), reequipping Speed Booster before the transition. Jump over the first pillar and first Evir, bouncing on the second pillar; this requires releasing jump when Samus is about 3 tiles past the first pillar. From there, Samus should bounce over all the remaining Evirs. A safe way to get out of the sand is to land inside the sandfall and do a spin jump to the left to less than full height, then turn right while spinning, break spin, and turnaround spin jump to the left.