I certainly couldn't (given that I can't run at all, and am an old fart besides), but I'd have to think that a national-level decathlete could do it--do we have any of those on this board?
A legal jump in the LJ, a legal put (well, maybe two--that 4kg ball takes some getting used to) in the SP, and the 400 (multiple rounds there, though) would be a good start. Assuming the decaguy could put in some practice time for the (non-dec) TJ and WT, there should be some points in those (again, multiple legal efforts probably not required).
And the HJ and PV should be ripe for the plucking, but there's the potential for multiple heights and protracted competition in both those events, meaning conflicts with other events...
Of course, a top-class decathlete should also win the 60, but the hurdles would be pretty tough (too low and close together)--hmmm...
I guess I'd say that a Bryan Clay type would be enough of an *athlete* to score 60-70 points, but the logistics of getting through all those events/rounds (including conflicts on the time schedule) would make it a difficult proposition.
As far as an LRC distance runner: NFW.