30 Mile Training Run Experiment

My experimental training run for the "Summer of 70" challenges (I turn 70 years old this summer) will include the Black Hills Ultra Marathon 50 mile, Leadville Marathon, Pikes Peak marathon, and other endurance events still a work in process.
More Gain Cave stuff: https://www.youtube.com/channel/UCrqFyEwur3i_S9Pj4CoGnlw