Podcast have come on so much.
The hookit podcast – great mountain bike podcast, with some good guests. (Enjoy this the most)
MTB podcast – done by one of the guys that does trainer road and his mate. Good technical discussion, if a little US centered.
Downtime MTB podcast – similar to hookit.
Non-mountain biking ones.
Myths and Legends. Really high production and good stories.
Plastic weekly – indoors climbing, niche but interesting, US centered.
Case file – one of the better true crime podcasts.
Thinking Allowed – podcast of the radio 4 program.
The Outdoors Station – great UK outdoors podcasts.
Jam Crack Climbing podcast – good UK based climbing.
Enjoy.
SingleTrack should really do a podcast in my mind. Would be great.