I've run them out about 2 or 3 slide widths. How wide is your slide and how
wide is your picture?
You are able to slow the motion path animation down to any length you want.
Select the picture, right click and select Custom animation. In the custom
animations task pane, select the motion path, right click and select Timing.
In the timing box, replace the number with 1:30. The motion path will now
take a minute and a half to complete.
To get the motion distance correct, I usually cheat a little. With the
Custom animations task pane still open, delete any existing motion paths for
the picture. Then select the picture and click Add Effect on the animation
task pane. Select Motion Path | Draw Custom Path | Line. Then Click on any
edge of the picture and drag the mouse to where you want that edge to end up
after the object moves. The motion path lines will re-center into the
middle of the shape.
Bill D.