Just regarding outside training with TR. In the TR calendar you can indicate you want to do the workout outside. The next time you turn on your Garmin or Wahoo bike computer the workout will be on there ready to use. I have not done an actual workout outside, but did do some testing to see how it works. They have done it such that at the end of each rest period you need to press the lap button in order to proceed to the work interval. This gives you the ability to wait until you are at an appropriate place to start the work interval.