[dreamux]

31 feet.

Ant jumps off the wall and onto the floor (no walking necessary, and easily survivable), walk straight across the 30 foot floor and 1 foot up the wall.

[noblethrasher]

Less than 31 feet since, in the presence of gravity, the honey is moving towards the floor as well.

[mschireson]

Lol. That's out of the box thinking!