Home › Top 4 Fitness and Gym in Riverhead, New York Find best Fitness and Gym in Riverhead, New York, with all necessary contact information, including addresses, phone numbers, working hours, map locations, and website links. Planet Fitness - Riverhead (NY 11901) US, Riverhead, NY 119011160 Old Country Rd Maximus Health + Fitness US, Riverhead, NY 11901126 E Main St Activated Wellness US, Riverhead, NY 1190121 W 2nd St STE 1 CrossFit Impervious US, Riverhead, NY 11901121 Main Rd