Rainbow Road (Mario Kart 8)

Rainbow Road is the fourth and final course of the Special Cup in Mario Kart 8. Unique from its predecessors, this incarnation takes place in a space station presumably owned by Mario Kart TV, with its multiple satellites floating, satellite-formed bleachers with audience cheering, and the road is given a new metallic design, as opposed to the transparent glass surface of previous games. It is located above the Earth's atmosphere, similar to that of Rainbow Road from Mario Kart Wii. One noticeable feature of the track is a space shuttle that resembles a Blooper, that circles around the track, similar to how a flying train circles around the Lightning Cup's N64 Rainbow Road. The track, similar to Rainbow Road in Super Mario Kart, consist of colored square tiles but it change colors like the Rainbow Roads from Mario Kart Wii and Mario Kart 7. The rainbow pattern are a similar to that of Mario Kart: Double Dash!! version, which is mainly consist of light pink, yellow, and turquoise, though the colors now appear shifting within a color spectrum, similar to Boost Pads of previous installments before Mario Kart 7.

Unlike all previous renditions, this Rainbow Road is electronic and technology-themed with a futuristic design which appears more like a stadium floating in the atmosphere, instead of being a "magical" space-themed setting of other versions. Even the game's producer, Hideki Konno, describes it as "spectacular." The music also has a different feel to it, with more emphasis on electronic rock style.

It also appears to have some influence from the F-Zero franchise, particularly when compared to the DLC course, Big Blue.

Course layout
The course starts from the first space station with the rainbow-colored tiles. After a turn the racers drive through the first anti-gravity section, that is 8-shaped. A gliding pad is found after the anti-gravity section and leads to the second space station with a large imprint of Mario's emblem in the entrance. It contains conveyor belts with opposite directions that changes each lap, like Toad's Factory from Mario Kart Wii. At the end of the conveyor belts there is a slope with alternate Boosts (that turn on and off through time) and at the end of it are two gliding pads. Afterwards, the drivers are launched through three Launch Star cannons that lead to two different anti-gravity paths, which are twisting and inclined downwards.

These paths alter in height, so if the player falls from the highest one, they can simply land on the other one. The lower path offers drivers a shortcut if they stay to the right of the Spin Boost bumper and drive off the edge. The player can see a Blooper-like spaceship orbiting around. Then the paths reunite each other and the antigravity section ends. A 180° turn with some Boost Pads at the outermost part, like in Mario Kart Stadium, and another turn make the track loop end. At this turn the player can see a hologram projection that says "SPECIAL CUP" with its trophy logo, but only in single-player mode. The racers then return to the space station and starts the next lap.

Trivia

 * This Rainbow Road as well as its retro counterparts, N64 Rainbow Road and  SNES Rainbow Road (DLC), and  GCN Baby Park (DLC) are the only courses in the game to have the map in different colors instead of just blue.
 * The way that the track splits into two alternate paths after the Launch Star cannon is a reference to the Mario Kart Wii version which features a similar part.
 * There are three 8-shaped sections in this course, referencing its game, Mario Kart 8.
 * One is right away from the starting line after exiting the large space station, and the other two are formed by the two twisting paths in the descending anti-gravity segment.
 * Before the finish line a screen can be seen displaying the course's map, this same detail can be found in Water Park and GCN Yoshi Circuit DLC retro course.
 * This Rainbow Road was actually shorter than the previous versions, despite having an unique design
 * It is notably shorter than the DS Rainbow Road, but not as short as the  GBA Rainbow Road