I think the timing there wouldn't work out unless I took more than a week - either I'm walking fast enough that I can probably do one long 20 mile day when I have to, or I'll be far enough behind that I wouldn't have the time cushion to backtrack for several days. (Unless I took more than a week off! I have the leave! It would suck for my co-workers, but the part of the problem is that I don't have any coworkers left.)