Just downloaded my @Google Timeline data before they drop the web based feature. Here's a snippet.
[Location History (Timeline)] cat Records.json| wc -l
54811690
[Location History (Timeline)] python3
Python 3.10.12 (main, Nov 6 2024, 20:22:13) [GCC 11.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import json
>>> fh = open("Records.json")
>>> records = json.load(fh)
>>> len(records["locations"])
2534124
The Records.json file is 1.3GB. It contains 2'534,124 locations of me since 2012.
A continous stream of movement of the last 12 years.