The Pishill climb is the longest uninterrupted climb in the Chilterns at 5.9 miles/9.5Km, and was used at the start of Stage 3 of the Women's 2019 Tour of Britain from Henley-on-Thames to Nettlebed.
The climb through Stonor gets steadily steeper, before a fast descent into Watlington, followed by the second climb back up Britwell Hill. The ToB riders turned right at Nettlebed, but you will continue straight on and downhill back towards Henley-on-Thames and your starting point.