Self-adaptive systems are widely recognized as the future of computer systems. Due to their dynamic and evolving nature, the characterization of self-adaptation and resilience attributes is of upmost importance. The problem is that nowadays there is no practical way to characterize selfadaptation capabilities or to compare alternative solutions concerning resilience. In this paper we discuss the problem of resilience benchmarking of self-adaptive systems. We start by identifying a set of key challenges and then propose a research roadmap to tackle those challenges.