Firstly I never listen to podcasts outside as it is very difficult to follow when there is traffic noise. I do occasionally listen to music with just one earplug in but not very often.
These days most of my training is indoors and I listen to podcasts for the vast majority of time when on the turbo.
My main go to podcast is TrainerRoad – Ask a Cycling Coach Podcast. It really entertains me even when discussing Crit racing or gravel riding. Admittedly I get fed up with Nate’s obsession with his sleeping disorders but the overall content is second to none.
My second favourite is Mark Florence – Cycling Time Trial Podcast. Truly excellent, unfortunately now more infrequent and shorter than before. If you want a few sample episodes to try out listen to the Joe Beer or even better the the Tim Ramsden podcasts. They are both coaching related and really give you food for thought.
Others that I follow but don’t listen to every episode include
Rob Manning of Tailwind Coaching. Some really good content and thought provoking ideas around base training.