Alaska…….Denali……big, wild & wide open places. With 20,310’ tall Denali and surrounding Alaska Range Mountains and glaciers as its backdrop, the 135 Mile Denali Highway is the setting for the spectacular Denali135 Endurance Race. The Denali Highway was the original and only road into Denali National Park from 1957 until 1971 and it is still as breathtaking and jaw dropping today as it was more than 50 years ago. Hardy and qualified adventurous athletes from around the World are invited to challenge themselves along the entire length of the historic gravel road from Paxson Alaska, the headwaters of the wild Gulkana River, to Cantwell Alaska…. Adjacent to the entrance to Denali National Park.