A portuguese cycle tourist is identifying a network of secondary roads and existing bike lanes using his GPS device.
This year he launched the first Road Book for cycle tourism in Portugal
It's in digital format (PDF format) and it has gps routes (KML and GPX) for cycling in Portugal.
Lots of maps, gps tracks, technical info, touristic info and much more.
Already available 1025 km of gps identified routes, divided in 20 sections along the Portuguese Atlantic Coast and Alentejo region.