The purpose of this study is to explore the relationship between service quality and customer satisfaction at fitness facilities. This type of research is quantitative with a correlation method, sample selection using accidental sampling consisting of: 1) 64 respondents who train at the gym, 2) 114 respondents who train at a fitness studio (type of training: training zumba, pilates, yoga, calisthenics, poundfit, TRX, body combat), 3) 82 respondents who train at a swimming pool or sports field (type of training: soccer, fun football, futsal, badminton, basketball, tennis). The questionnaire on the indicators in Service Quality is Tangibility, Reliability, Responsiveness, Assurance, Empathy, then the indicators in Satisfaction are Complaints and Suggestions System, Comfort and Safety, Communication. The results of this study are that Service Quality has a positive effect on Satisfaction 0.000, then the correlation value is 1) facilities in the gym r = 0.636, 2) facilities in the fitness studio r = 0.687, 3) facilities in the swimming pool or sports field r = 0.504. The conclusion of this study confirms the importance of service quality in improving customer satisfaction in fitness facilities. For further research, it is recommended that the data collection time be extended. Then, broader research with a larger population is also needed to obtain more representative results.