Very intensive with cardio. A big wall climb is probably 2-3k vertical feet or more of climbing. That's like climbing hundreds and hundreds of floors in a bui

Very intensive with cardio. A big wall climb is probably 2-3k vertical feet or more of climbing. That's like climbing hundreds and hundreds of floors in a building (but even steeper and harder). Speed climbers can ascend something that high in a matter of hours. It's a big cardio and endurance demand.