Cycling Lon Las Cymru

Lon Las Cymru is Wales at its absolute best — a 255‑mile (410km) ride from Cardiff, or 242 miles (390km) from Chepstow, all the way to Holyhead. This iconic coast‑to‑coast route takes you through the country’s rural heart, rolling across the Brecon Beacons, Snowdonia, the Black Mountains and the Cambrian Mountains. It’s one of the most scenic long‑distance rides in the UK, and every mile feels worth it.

The guide splits the route into five manageable stages and describes it from both starting points, using quiet roads and traffic‑free paths wherever possible. Each stage comes with 1:100,000 mapping, elevation profiles and clear directions, so you always know what’s coming up. You’ll also find suggested 4‑ to 7‑day itineraries from both Cardiff and Chepstow, making it easy to plan your perfect pace.

Along the way, Lon Las Cymru passes historic sites, charming towns and some of the most varied landscapes in the British Isles. The guide also includes practical advice on transport, accommodation, baggage transfer and bike prep, plus handy contacts for bike shops and places to stay.