The purpose of the study was to identify how the Personal Branding Marathon with the involvement of the Ethics Supervisory Committee could influence the teacher self-branding in the settings of the digital environment if the ethics of communication is given paramount importance. The study used qualitative and quantitative methods such as a semi-structured in-depth interview, a self-assessment checklist, and an expert assessment checklist. The Triangular Assessment Method was used to obtain participants' judgments about the importance of every specified component of the self-branding viewed from their perspective in terms of implementation. The yielded data were processed using the IBM SPSS Statistics 25.0.0.1. Software. The novelty of the study lies in the way the teacher self-branding was organised and delivered. The Marathon created a community of individuals with similar needs and the environment facilitated and assisted by the experts to put the teachers in the 'point of no return' situation. The Marathon with the involvement of the Ethics Supervisory Committee was found to positively influence the teacher self-branding in the settings of the digital environment if the ethics of communication is given paramount importance. The intervention raised the teachers' awareness of self-branding, enhanced/upgraded the tools and strategies of self-branding, and improved their communication and communication ethics, particularly. The teachers became more professionally advantaged, self-efficient, and confident as individuals. The intervention was found to help the teachers built-up a strong self-brand on the Internet and at the workplace. They also improved their communication skills in terms of ethics as the participants were assisted by the communication expert.