You have company with that drive.
I have a good friend who is same age, same upbringing and similar lifestyles. His main exercise is weight lifting. He is very strong and his body shows what he does.
On a recent hiking outing which included a serious hike and rock climbing, it became clear that weight lifting did not prepare him for such hiking. His GF is a serious swimmer. She had no issues nor did I or my wife who does biking, treadmill, Curves.

The point I am trying to make is that lots of biking is good for your CV system which in turn frees you up to do other things such as adventure traveling.