The London course’s “PRL Full” route is meant to mimic the distance (but not the full course) of the real Prudential RideLondon-Surrey 100. It takes you on eleven circuits of the “London Loop“, then turns around at the Surrey roundabout and heads towards the sprint and finish banner on The Mall.
Although I can’t seem to find numbers for the 2016 course, it appears that Zwift’s version has significantly more elevation gain than the real-life course. (The 2013 course had a gain of 6,167′.)
Distance: 173 km (107.5 miles)
Elevation Gain: 2,496m (8,189′)
Strava Forward Segment