This is how I'd really love to see Denali:

Wouldn't this be the most amazing trip ever? Biking along, taking your time, stopping to camp where you wanted. Traffic would be considerably reduced (and much less dangerous) because motorists aren't allowed in the park, so shuttle buses would be your only traffic. Plus, you could pull a trailer with your camping stuff and save your back. I'll pull a trailer with the kid, hubby can pull our tent, etc. A nice, long, slow tour of the most incredible place on earth. Sounds like heaven.