I checked my chain for wear with my Park Tool Chain Checker CC-3.2. It is past .75% wear. Time for a new one.
How many miles do I have on this chain? Seems like a simple question. Unfortunately Garmin doesn’t provide a way to export my data. I signed-up with VeloViewer which is a 3rd party analysis website. The annual pro subscription is $13.40 USD. I’m impressed so far. They have some nice tools, charts, and most importantly ability to export all my activities.