A Cycling Big Year would differ from a Jogging Big Year. I’ve been running for over three decades, on a bike I’m only slightly more competent than a ten-year-old with training wheels. Oh, I exaggerate slightly but in truth when I took the Specialized Sirrus out for a whirl, twice recently, I felt just like a kid. Turning a routine corner, I crashed into a pole (luckily at near zero speed).
But such a sense of freedom! Practice session #1: 13kms. Practice session #2: 24 kms. Both of them slow but who cares?
(Notice the complete lack of proper gear.)