(Note: The math is there just to show conclusions.

)
x5 to convert to feet. That's 100 feet.
Most first-level characters move 6 squares - That's 30 feet.
3 and 1/3 (4) rounds to close, assuming only one side is closing (Logical, if the other side is using ranged weapons to weaken their enemy)
1.833~ (2) rounds to close if both are charging.
Question is, in which case is the power more useful and does it do something appropriately useful in that time?
Oh - The start of combats. In dungeons, you could easily start in the 6-12 square range. In open fields, anywhere from 40 squares to 2 squares, depending on terrain, 'shrubbery' and stealth/perception rolls.
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