Opinions Wanted -- DNA or Dedication?
#26
Blast from the Past
That's the hard part in determining what the contribution of either factor is. You can't go genetically "over your head" regardless of how hard or long you train. But you can certanly get discouraged and give up before you figure out how to get there.
An additional mental factor in cycling. I've known quite a few riders who were beasts and just didn't have the nerve to mix it up. A "Fear Factor" that doesn't exist in say running.