When using your AirPods the distance from the charging case is irrelevant. There is no requirement to be near the case at all. However the AIrPods must be close enough to the iPhone (or source of whatever it is playing) that a Bluetooth connection can be established and maintained.

SOLVED Do AirPods Need the Case to Work? - The Gadget Buyer

01‏/12‏/2021 — That is to say charged pre-paired AirPods can be an unlimited distance away from the case as long as the device they are connected to remains ...

Do AirPods Disconnect When Far Away? Answered! | Tech Advice

21‏/01‏/2022 — Yes your AirPods may disconnect if you take them too far away from your device. In many circumstances you can take them as far away as 60 ...

Can Apple AirPods only connect to an iPhone when the case is ... - Quora

Can Apple AirPods only connect to an iPhone when the case is nearby? I carry the AirPods outside of the case to go to the gym and when I reach the gym ...

Do you have to carry the charging case with you? r/airpods - Reddit

16‏/02‏/2017 — You dont need to have the case with you at all times but it is convenient to have. It stores the ipods safely when not in use and recharges ...

How Far Can AirPods Be Away From Your Phone? (AirPods Range/Reach)

03‏/05‏/2022 — Your AirPods can be anywhere from 30 to 60 feet (or 10 to 18 meters) away from your phone to preserve the Bluetooth connection. This is the ...

How Far Can AirPods Be Away From Phones? Tested Result 22

AirPods and the case need to keep a distance between 32 feet to maintain connectivity. If you go more than 32 feet from the case you will face connectivity ...

How Far Away Can AirPods Be From Phone? The Range Explained

Of course this is not always the case. For one you are probably not constantly measuring how far you and your AirPods are from your device. At the same time ...

How Far Can Airpods Be Away From Phone? - The Teal Mango

19‏/10‏/2021 — According to the company the ideal operating distance for this device is between 30 and 60 feet. Thats a range of around 10 to 18 meters ...

Does the AirPods case need to be around while listening via an iOS ...

When using an iOS device with a set of AirPods that have previously been paired is the case also required whilst wearing them or can the buds be used ...