National Cycle Network Route 4 (NCN 4) forms a link between the bustling heart of London and the rural landscapes of Wales. This multi-day odyssey spans London, the home counties, Wessex, Somerset and South Wales. Along the way, you'll encounter a tapestry of waterways, from the tidal Thames and its tributaries to man-made canals, expansive estuaries and turquoise seas. With NCN 4, water is an ever-present companion, adding a serene dimension to the adventure.

Starting from the historic borough of Greenwich, the route sets out westward, culminating in the Welsh harbour town of Fishguard in Pembrokeshire. I’ve divided this 408-mile (657-km) journey into eight stages, all finishing in towns or cities with a range of dining and accommodation choices. Additionally, within each Tour description, I've provided a nearby camping option.

At every stage of NCN 4, you'll pass through towns and villages, ensuring you're always in close proximity to eateries, supermarkets and bike shops. The route also follows several railway lines, meaning you'll have easy access to railway stations if the need arises.

The majority of the route (92%) consists of smooth, paved surfaces, and half of it is blissfully free from traffic. While the initial stage comprises relatively flat terrain, brace yourself for a week of engaging climbs. Covering an average daily distance of 51 miles (82 km), I’d recommend having some prior experience with multi-day cycling. However, I’ve included the full route so you have the flexibility to tailor it to your preferences. With an ample number of towns along the way, you have the option to incorporate additional overnight stops.

For this journey, a touring or gravel bike would be the most fitting choice, especially since there are segments off the beaten path where wide tyres and a sturdy frame would be advantageous. That said, a road bike would also suffice, particularly for the paved, traffic-free sections – just be prepared to dismount and walk on rougher terrains. This journey is viable year-round, though most campsites close during winter, and the shorter, colder days could present a challenge.

Gear up for a diverse adventure, commencing in the urban hub of London and culminating amidst the tranquil coastal lanes of South Wales. Your journey will unfold along the course of the maritime Thames, leading you through picturesque London parks, past centuries-old castles, regal estates, industrial canals, abandoned railway beds, intricate lock systems, awe-inspiring aqueducts, rugged coastal coves, and the vibrantly painted houses that characterise Welsh seaside towns. This journey promises a rich variety of landscapes.

If you find yourself short on time and unable to tackle the entire route, the Celtic Trail offers a compelling alternative. This trail mirrors the path of NCN 4, spanning from Bristol to Fishguard, allowing you to experience the Welsh portion of the route. Full details can be found in this Collection: komoot.com/collection/1404901