This usurper's approach was painful to watch

After all that work... :\

Beware Abrupt Changes in Spacing

If you fall into a rhythm too easily, you may forget that your jumping technique must change to match the distances between blocks, which is what apparently happened to the character on the left. In the situation shown, you may jump from the center of a block when it is only one space away from its neighbor. If it is two spaces away, you'll need more of a running start and should back up as far as your block's corner.

How to Gain a Head Start in Races with Disappearing Lockblock Terrain

Position yourself above the block or blocks that will remain solid after the rest vanish.

Nail the landing.

Note the distance between myself (green dot in lower-right corner) and everyone else (white streaks).

The designer attended to this oversight by positioning a redirecting gravity arrow above my target block...

...but under the right circumstances...

...it may be possible to rest on a corner and achieve the same results.

In this race, the green blocks aren't tripped at all when a winner crosses the finish line, so I may stay here and wait.

Gone first are the blue blocks...

...and then the green, leaving me to complete the race. Note again the distance between myself and the nearest competition.

If someone with the edit password manually edits the landscape to dissuade you from hanging out...

...move to a position directly overhead where he will not notice you.

The designer eventually solved the problem altogether by adding a blue key to the finish line, ensuring that anyone lurking above a blue lockblock would fall through it in the end.

To align yourself above the corner of a distant solid block...

...where there is a redirect arrow...

...first find your position on the mini-map...

...and align it with your target block's mini-map location. The edge of the frame may be useful for this.

Win.

As a designer, you may foil future attempts...

...by setting arrows to the far right and left of both corners.

In this race, there is nothing reliable to stand on after the blue blocks disappear...

...but holding "up" while bouncing yourself against a sufficiently tall bank of gravity redirect arrows may slow your descent long enough for them to return.

This may seem obvious after the previous examples, but upward-pointing gravity arrows may be used to stop your fall in the same way as solid blocks, as long as there is no leftward or rightward arrow capping them off. Even if there is, you may disengage from the stack before reaching the top, rejoin it near the bottom, and repeat until surrounding lockblocks solidify.