He’s a beast for 86! I don’t ride bikes, but that sounds pretty good to me. I only walk 3+ miles every day, and my feet hurt plenty! Up and down stairs, too. I’ve averaged 20 floors a day this week (ok, that’s not my usual - my year.y average is 12 floors a day).
Yearly average of 12 floors a day is 43,800 vertical feet per year! Very good! That’s close to what I’m hitting.