Lôn Las Cymru, Wales's preeminent cycle route, covers some 250 miles from Cardiff (or Chepstow) in the south east to Holyhead in the north west.
A journey that can be completed in four days or over as many as seven, the route takes in some of the most stunning and diverse landscapes in the British Isles.
It can take in the Brecon Beacons and Snowdonia National Parks, Black Mountains and the Cambrian Mountains, and flatter landscapes such as the Wye Valley.
The route also passes by an impressive array of interesting sites and relics from ages past including castles, churches, priories and industrial archaeology.
A new Cicerone guide by Richard Barrett details the route across five stages with the emphasis on quiet roads and traffic-free paths.
Accompanying route description for each stage is 1:100,000 mapping and elevation profiles, giving a clear indication of the nature of each section.
Suggested summary schedules from both possible start destinations are included, as are handy route planners highlighting facilities on route.
The guide also includes useful practical information such as transport to and from the route, preparing your bike and baggage transfer options.
Richard Barrett returned to long-distance cycling in his fifties when he bought himself a classic British-made touring bike.