Best way to physically condition for mountaineering?

Hey y’all! I am super new to the mountaineering world and really passionate about learning more. What is the best way to condition/train for mountaineering/climbing? (Especially looking for suggestions I can do in town, or recommendations for good training hikes. I am currently based in Portland OR)

Spend the majority of your workouts in HR zone 1 and 2, hike with big pack and elevation change, build in some climbing relevant strength routines.

Training for alpinism is more duration than intensity. 

Do bot exercises.

Best book on the subject that I am aware of: 

https://www.amazon.com/Training-New-Alpinism-Climber-Athlete/dp/193834023X 

For me, nothing beats a base of trail running over hilly terrain. Go long. Build up to 90-120 minutes on a weekly run, with a couple shorter runs during the week. The best terrain has lots of sustained uphills and downhills, rather than short little up-and-down jaunts. 

Also helpful to do some practice with a pack on, whether hiking or running, to get your muscles used to the different weight distribution.

If you really want to max out, start training for 50k trail ultras. I never go that long, but it would help.

run up hills as fast as you can in your free time

And wear a pack when you're running

The only way to train for mountaineering is a very, very specific regime of race-walking workouts and a strict diet of cheese and beer.