Sorry, I spoke too soon. The S-75 table is from the document comparing the characteristics of the S-75M, S-75M2, and S-75M3.
The S-125 graph is from the study on the reduction of the inner engagement boundary thereof.
However, I think it may not be entirely accurate, or applicable. This video shows a 29 kilometer shot (with upgrades to just the radar, not the missile):
http://www.youtube.com/watch?v=yT4inkGm2j8Here is the missile velocity telemetry graph for that test:
I don't have time right this minute to do a rough integration, but it appears that the powered stage of flight lasts longer than the ~10 km indicated on the G graph.
The missile in the video is probably a 5V27D. I am not certain, though, that it has the same characteristics as the V-601PK.