Apple Support - https://support.apple.com/
iTunes direct downloads - https://support.apple.com/downloads/itunes
iCloud for Windows direct download (Non-Microsoft store download) - https://secure-appldnld.apple.com/windows/061-91601-20200323-974a39d0-41fc-4761-b571-318b7d9205ed/iCloudSetup.exe
Run with your Apple Watch ( How to Start, pause, end workout; track progress; View your route - The colors show your pace, with green the fastest pace and red, the slowest.) - https://support.apple.com/en-us/HT210385
VO2 Max - Track your cardio fitness levels - How Apple Watch estimates your cardio fitness levels
Requirements: (Note: not all requirements rae published, but were provided from Apple support)
Following health details configured: Age, Sex, Weight, Height.
One of three supported workouts: Outdoor Walk, Outdoor Run, or Hiking workout in the Workout app.
Heart rate must increase by 130% from average resting heart rate for 20 minutes or more.
Avoid greater 5% incline or decline during workout.
https://support.apple.com/en-us/108790