Book excerpt: A guidebook to cycling the Lon Las Cymru cycle route from either Cardiff or Chepstow to Holyhead. Covering 410km (255 miles), this long-distance cycle through the heart of Wales takes 5 days and is suitable for both first-time and experienced long-distance cyclists. The route is described from south to north in 5 stages, each between 61 and 112km (38–70 miles) in length. Starts from either Cardiff or Chepstow are described and alternate schedule options are provided to allow you to adapt the ride to suit you. 1:200,000 maps and profiles included for each stage GPX files available to download Refreshment and accommodation information given for each stage Suitable for all bikes Information on cycle shops along the route