The synthesis of the amide-based rotaxane 7a bearing calix[4]areneblocking groups is described for the first time. While rotaxane formation fails if a calix[4]arene is functionalized at the upperrim with only an amino or methylamino group lacking any spacer, the prolonged amine 5a works successfully as stopper unit preventing dethreading of the dimeric wheel 1a by its size. Rotaxane formation of