Fast, flat course with lots of aid stations. These races are run on the trails around the beautiful Boulder Reservoir.
They consist of 7.14 mile laps and runners will be given 30 hours to complete the 100 mile course and 8 hours for the 50K.
Any 100 mile runner dropping before the 24 hour mark will automatically be given an official distance in the 24 hour solo category.
It is a fast course with approximately 1,400 feet of gain and loss for the 100 mile and 420 feet for the 50K, with a mix of pavement, dirt roads and non-technical singletrack.
With aid stations every 3.5 miles runners will enjoy Hammer Gel products and sports drink out on the course and a great mix of foods and drink at the Base Camp aid station, including pasta and hot soup for the 100 milers at night.
These races will be run simultaneously with the 24 Hours of Boulder so there will be a lot of aid, great support and lots of energy.