Update: I put this in the mail on Tuesday and got cancellation confirmation less than 48 hours later.
Also, your mileage may vary, some locations are a little more of a stickler about certified mail, but you should get a confirmation from the location within a few days if they’ve accepted.
I needed to cancel Planet Fitness in the middle of the COVID-19 pandemic and I really didn’t want to be showing up at a gym in person right now (time and unnecessary risk) just to cancel.
I called up my local Planet Fitness and was told I could either come in in person *or* send a [yes, snail mail] letter to the Planet Fitness I signed up at.
So, I’ve thrown together a cheap template to help you include everything you need to cancel (it’s just name, date of birth, and signature, according to the person on the phone.)
You can download the doc I put together at: Planet Fitness Cancellation Word Doc template