I think that the R&R stands for Rivers & Reservoirs judging by the number that we came across. A circular(ish) route from Witham via Stock, Burnham-on-Crouch, Abberton Reservoir, Sudbury, Finchinfield & back to Witham. It turned out to be a very hot afternoon, which slowed me down a bit, so I invested in various ice-creams but there were no mechanicals and was back in just over 11 hours for the 215kms route. PW.