The race is held in the river valley of Lethbridge Alberta, Canada. One lap is 54.2 km with approximately 1,200 m (3,600 feet) of elevation incline and decline. Most of the hills are 150 to 250 feet in size and you will hit about 16 of those in one lap.
Here is a Garmin track of the 54 km course: https://goo.gl/93RCYC
Course Map and Info 2018 (PDF file)