> One can easily convert high-intensity fitness to low-intensity but prolonged fitness. This ain't truth even though I get where you are coming from. Otherwise

> One can easily convert high-intensity fitness to low-intensity but prolonged fitness. This ain't truth even though I get where you are coming from. Otherwise ie best sprinters would be automatically best ultra marathon runners. Guess what - they are not even trying to compete there, its just different sport, their bodies are simply not accustomed by training for that and they would be pretty bad at it. Climbing, however good sport that is (apart from people dying from time to time mostly due to human errors but not only), ain't the best indication of this - if you are an elite climber, you don't go out and do ie 10-hour continuous hard scramble/easy climb. No, you focus on those hard routes, ie on project for a week or month. Yes you have decent endurance on those easy climbs but that comes from overall fitness that top climbers simply must have