Frozen Hillside is a cold and icy course located high up in the frigid mountains. The surrounding landscape beneath the course suggests that it is located near Planet Popstar's Rainbow Resort. Most of the environment here is completely natural, such as its icicle formations and plants. But there is also some machinery present, such as the wire grating serving as platforms and even sensitive lasers scaling the walls of certain parts of the course. The course has frozen, prismatic plants and even huge whales flying around a small section of the area. There is a large cave which makes up a fourth of the course, half of which is lit solely by Dales, although there is a switch to brighten the room with what appears to be crystals alone walls. Because the ground in Frozen Hillside is so slippery, wheelies such as the Wheelie Bike or the Wheelie Scooter often skid along the course, and are not recommended.
The course itself is fairly simple. Most of the turns are very large and don't require much cornering, although nearing the end of the track there are some very sharp turns which require drifting and/ or boosting to adequately pass by. There are also multiple routes to take in many cases, giving racers the chance to avoid coming into contact with other racers.