A 50k is scary, and so is doing a podcast without a guest. Different scary, different hard. 
But here we are! 
Here's quick episode on the lessons of my first 50k train run, why I did it and my analogy of the phases of building to a goal, doing said goal and recovering from the event. It's a lot like surfing; sitting on the beach, looking for your angle and reading the waves, working to get out, resting from the work and then the waiting, surfing and wiping out or coming safely to shore. 
Please enjoy the ride.