Distance: 102km, altitude: 752m.
My commute to work. Lovely ride to London, taking in Aston Hill as you cross the Chilterns. This route follows the Great Union Canal path for about 12km up to Paddington, cutting out a lot of the traffic in the capital. This tow path is great, and relatively quiet, but not the smoothest surface in the world. Don’t ride with 100+psi.