Martin submitted the winning design for London’s first dedicated cycle route in 1977.

Now, 43 years on, the ground survey and GPS mapping of a system of recreational rides around the capital’s urban periphery is complete. The route comprises 12 arcs, 12 spokes, and 12 spin-offs. In total, it covers more than 750 miles of off-road and quiet cycling through varied landscapes – often beautiful, always interesting.

In a reference to the London orbital motorway, the M25, this cycle route system will be the C25. While the project is in development I have developed a blog library of a recent adventure, or from the 2015-18 archive of photos taken on reconnoitre. These are laid out chronologically below.

Please contact Martin for further information, including access to the 85 GPS passes logged on the open source GPSies site.