Distance: 174km, altitude: 927m.
https://ridewithgps.com/routes/30043808
A slight variation on the Malmesbury flat century, to add a bit of variety, and a bit of climbing. Lunch at the Summer cafe is a must.
I also added a last resort coffee stop in Aston, in case you are in need of sugar, or if you experience coffee related mutiny from your fellow riders.
Cycle routes in and around Oxfordshire 