6194: Denali Solo, an adventure travel narrative self-published by Darack in March, 1995, covers his two attempts (one unsuccessful and one successful) to solo-climb Mount McKinley (Denali), the highest mountain in North America and one of the Seven Summits. Darack succeeded in climbing McKinley, via the West Buttress route, on June 29, 1991 when he was 20 years old, possibly the youngest to make a solo ascent of the mountain. 6194, endorsed by Galen Rowell, was nominated for the Boardman Tasker Prize for Mountain Literature in 1995.