Street harassment is a common everyday occurrence, yet little academic attention has been paid to how it affects those engaged in outdoor recreation. This study critically explores street harassment experienced and managed by runners in London. Data was collected through an online survey and one-to-one interviews. A total of 121 runners across 26 London boroughs completed the survey, with seven women and two men taking part in follow-up interviews. Transcripts and survey responses were analysed using reflexive thematic analysis. The survey results showed that 84% of women and 50% of men have experienced some form of street harassment while running in London. Five themes were identified: Running into Trouble, I am Afraid of Men, The Cost of Safety, Silencing Myself and It's Not Me, It's You. These themes illustrate the complexities contained in the experience of street harassment, the impact it has on runners and how they try to manage it. This study highlights a pressing need for a shift in cultural and political attitudes towards the issue of street harassment.