Starting off just down from the funicular going up to Le Mont-Pélerin, this section takes you through the hanging vineyards of Les Terrasses de Lavaux, followed by a lake side walk bringing you all the way to Lausanne, via Cully and the Olympic Games Museum.
According to Strava, it took me about 4:51 hours to cover the actual 21.61 km, so the official times seem rather correct !