I admit I was surprised when I first started using these BLE sensors, and I have had a hard time having a sensor so far away that I can't pick it up. I was using a RPi4 before I switched to a NUC-like mini-PC and the built-in Bluetooth receivers on both seem to be equally sensitive.
For the ultimate in distance, though, you want to use YoLink LoRa temperature sensors, which can be received by their hub from up to a quarter-mile away. They have to be used with the YoLink hub, which connects to Wifi.
There is a a YoLink Home Assistant Integration, but it has to talk back to the cloud. YoLink has been promising a USB LoRa receiver for only local communications but they haven't come out with one yet.
But there are some applications that just need that extra range; I have a YoLink IR motion sensor in the inside back of my steel mailbox, and it triggers every time the mailbox door is opened, hot or cold. It's been working for a year and I haven't had to replace the two AA batteries yet.
https://www.amazon.com/YoLink-Wireless-Temperature-Humidity-Refrigerator/dp/B08JP2TDSC
One hub can handle multiple YoLink devices. One temp sensor I like is the waterproof temperature sensor with a probe on a long cable, as I haven't even seen any other kind of battery-powered waterproof temp sensors with a probe.
https://www.amazon.com/YoLink-Weatherproof-Temperature-Sensor-Required/dp/B08Z3XH313
I have these all over my house: https://www.amazon.com/YoLink-Wireless-Temperature-Humidity-Refrigerator/dp/B08JP2TDSC