I guess this is my first diary post :-) I've only just discovered this thing is here but it's a jolly good idea.

I've been making an effort to try to fill in the bridleways and footpaths around Cambridge and have been successfully finding and mapping lots of ways which don't currently have OSM coverage. I'm mapping all over the place but my end goal is to be able to declare individual areas of countryside (as defined by the roads surrounding them) "complete", having surveyed the roads all around for path entrances and followed all those paths and all their branches.

This is progressing pretty well, particularly for the squares defined by:
1) Madingley Road, Grantchester Road, New Road, Long Road
2) A428, Long Road, Barton Road, Main Street

Area 1) is the one I've thusfar located the most paths through. These paths go around (and through!) the Barton Road Firing Range site and form a pretty nice network North of Barton village. I believe I've almost explored all the branches of these paths although there may be some more waiting to surprise me.

I'll try and post back with occasional updates about where I've been.