NEW! Photos added from yesterdays ride:
This path runs 5 1/2 miles south from Cwmcarn to 14 Locks. after a short break and snack, I then turn around and ride 4 miles back up the way I came to the village of Crosskeys where I cut over onto the Sustran Cycle Path #47. I then ride approximately 4 1/2 miles through Sirhowy Country Park. Except for a short connection at Crosskeys; it is completely car free, flat, and an easy-peasy ride.
Also of note: Monmouthshire and Brecon Canal and www.CycleStreets.net (and excellent smartphone app!). Check it out.