The London Outer Orbital Path — more usually the "London LOOP" — is a 240 km (150 mi) signed walk along public footpaths, and through parks, woods and fields around the edge of Outer London, England, described as "the M25 for walkers". Its first section was opened on May 3, 1996. The route became fully walkable in 2001. Wikipedia
Although I had been based in London since 2004, until 2011 when I discovered the walk, I knew that I had only scratched the surface of a city that I still felt like a visitor in. Walking the LOOP was the perfect opportunity to trully explore the city and make my London story come full circle.
I walked the LOOP between May and November 2011. Although the official route is divided into 24 sections, I did the walk in 15 days, as outlined in this great guide book by David Sharp. This site was launched in March 2013.