What experience should I have before Denali, guided or with my own team?
What should I have done before Denali?
A previous glaciated expedition, roped glacier travel and crevasse rescue until they are automatic, and the fitness to carry and haul for three weeks in serious cold. There are no porters: you carry a pack and pull a sled the whole way.
The full answer, kept up to date: What experience do I need before Denali? The guide chapter: Planning your trip