While coming back from a day float on Brushkana Creek, I noticed that the hills above the Denali Highway in that area looked quite hikable.
Earlier this summer I had asked someone about how interesting Brushkana was to float, and was distracted with stories about how beautiful the upper Jack River is. It appears it would be a easy 2 day or hard 1 day hike into the the upper Jack River from the Denali Highway, from which one could packraft down the Jack River or continue hiking over to Carabou Pass and packraft down the Chutlitna River. 