I made something similar for my dog. Arduino Nano, GPS module, LoRa module, 18650 battery, and an antenna. I then had a "base station" using ESP8266 with a LoRa module and antenna that would forward the GPS data to the cloud. I was in a heavily wooded area and the LoRa signal would start dropping around 1000ft. I didn't know free SIM data was a possibility via Hologram.io or I probably would've gone that route.

I really don't like the idea of attaching a lithium ion battery to my dog's neck, and I never learned how to design PCB's, so I'd also like to revisit my project with some improvements.