Besides the obvious place of your yard and perhaps near by parks below is a list of places on Long Island where you may be able to fly and race your Quad / Drone / Multicopter. This page is frequently updated, please check back often. If you have any suggestions for a new place please leave a comment.
FPV Addiction – http://www.fpvaddiction.com/ – Club field is located in Coram, NY. Prospective members are welcome to fly at the field three times before membership is mandatory. AMA membership is required. Club membership is $100 per year in addition to a $50 initiation fee. This is a great option for those that live in Suffolk County, its an amazing field, be sure to check out their site.
Cedar Creek Park Aerodrome / Raoul Lufbery Field – https://www.nassaucountyny.gov/2792/Cedar-Creek-Park – ***Update*** – We have a dedicated page setup for Cedar Creek – https://lifpv.com/cedar-creek-fpv-quad-racing-field-nassau-county-ny/ There is now a dedicated FPV Quad Racing field at the park.