Yes, you can absolutely walk along the Grand Union Canal in London, as it features a continuous, well-maintained towpath that was originally built for horses to pull barges. In 2026, the London section of the canal—stretching from the Paddington Arm through Little Venice and out toward West London—is a popular green corridor for walkers, joggers, and cyclists. It offers a unique "hidden" perspective of the city, passing through vibrant areas like Kensal Rise and the industrial-turned-modern hubs of Hayes and Southall. The Canal & River Trust frequently organizes "Let’s Walk" community events along this route to promote outdoor activity and nature spotting (it's a great place to see herons and kingfishers). While the paths are generally safe and paved, it is a "pro-tip" to stay alert for cyclists, as the towpaths can be narrow in some sections. Most of the route is accessible 24/7, but walking during daylight hours is recommended for the best views of the colorful narrowboats and the diverse architecture that lines this 137-mile-long historic waterway.