I’ve been maintaining a Google map of all the TOPW routes but it’s become too big & unwieldy so I’ve broken it down by year; this means you can view each year’s map separately or overlay them (just open them one after the other) for the full picture.
You can now find Google maps for the 2009, 2010, 2011 and 2012 (i.e. current) walks; there’s an index of the walks on the “Walks past, present and future” page.