Wii Mushroom Gorge

Mushroom Gorge is the third course in the Mushroom Cup from Mario Kart Wii. The course is located on a mountainous zone with tall mushrooms rising over cloudy pits. Racers travel the course mainly on land; however, on a part of the course, they enter a cave where they find a pit full of Mushroom Trampolines, which are mushrooms the racers use as platforms. Players can drive two different ways over these mushrooms to cross the cave. Red Mushroom Trampolines cause drivers to bounce, so players can do a trick while they are in the air to get a small boost of speed later. The green-capped Mushroom Trampolines, however, do not cause vehicles to bounce. Some Goombas appear serving as obstacles on the track.

Mushroom Gorge reappears in Mario Kart 7 as a retro course of the Shell Cup. The course's layout shows some changes from its first appearance, including a blue-colored Mushroom Trampoline for the gliding function and the removal of the two Mushroom Trampolines at the beginning of the course.

The background music of this course is available as a selectable music track on the Mario Circuit stage in Super Smash Bros. for Wii U, and on any Mario Kart stage in Super Smash Bros. Ultimate.

Course layout
The track begins on a dirt road. There is a slight turn to the right and another to the left, which brings to a wooden bridge that turns right. After that, there are Item Boxes for the player to take. After them, there is a single red Mushroom Trampoline that the player can use a trick on to gain a speed boost. Before this mushroom, other mushrooms can be seen. In between the bridge and the dirt road is also an abyss the player can fall into.

After the mushroom is a left turn in which the player has a choice to take the longer, but safer path with Item Boxes and Dash Panels or the more dangerous, but shorter path with Mushroom Trampolines (The one CPUs usually take). After this is an entrance to a cave, in which the road turns left and into an abyss with Mushroom Trampolines all over. The player also has two paths to take, and both involve the use of the Mushroom Trampolines in the cave. One path on the right is normal while the one on the left takes the player to a greater height. Both paths have green mushrooms, red mushrooms, and Item Boxes for the player to grab and there isn't much of a time difference between them.

After the mushrooms is the end of the cave and the last turn, which is a left U-turn around an abyss. Goombas are on this part of the track, helping the player by releasing mushrooms or hindering the player by acting as an obstacle. After the Goombas is the finish line which starts another lap.

Shortcuts
In Mushroom Gorge, there is a shortcut that allows the player to speed past the regular curving route and get a boost. It can be performed without a mushroom (by jumping over the thinnest part of the grass and turning slightly right after bouncing off the first mushroom) and is recommended for Time Trials. After starting the race, the player should head to the left through an area with no fence and use a mushroom boost (or jump) to drive off the cliff and bounce off the Mushroom Trampolines below, landing on the bridge.

This shortcut was responsible for Mushroom Gorge becoming infamous as the site of the "Mushroom Gorge Glitch": where racers turn around and bounce off the first Mushroom Trampoline and lean back to climb on the cliff. Moving left for a while then drops the player onto the track before the finish line. Because of this, the deliberate shortcut and two mushrooms were removed in Mario Kart 7.

Also, by the last U-turn, if the player cuts across the grassy patch with some sort of speed boost and doesn't fall into the crevice, there is a time gain of a second or two. Players can also use a mushroom and jump across the gap itself. It is also possible to bounce off the final Mushroom Trampoline on the left side of the cave and climb on the left wall and get onto the other side of the gap; a Mushroom boost is required. In Mario Kart 7, this can be done with the glider, but is much harder and costs time.

Whether intentional or not, hitting a jump boost will allow the racer to drive and drift off-course without losing speed. This status is removed after bouncing off a mushroom trampoline.

Mario Kart 7
Mushroom Gorge reappears in Mario Kart 7 as the third race in the Shell Cup.

Due to graphical limitations, the Mushroom Trampolines are larger than in Mario Kart Wii, and they are flat, and some mushrooms in the background have been removed. The arrows at the first split paths have been changed from brown to red. Some of the Dash Panels have been shifted around, with an extra one being added to the first split track section, and the one on the right at the split paths has been moved forward.

The most significant changes to the course are that the shortcut near the start of the track with the Mushroom trampolines has been removed. Inside the cave, five of the red mushroom trampolines have been removed, and the green mushroom on the left route is now a blue mushroom trampoline that acts as a glider ramp.

Mario Kart Wii

 * Website bios:
 * Flag of USA.png "Bouncing and pulling tricks off the red mushrooms is crazy fun, but it's tricky to keep your car out of the chasms."
 * Flag of Europe.png "Bounce your way through an underground cavern on top of giant mushrooms that double as trampolines. Whatever route you take, just make sure you land safely!"
 * Guide: "This is the first course to offer a multitude of tricks, as well as precarious edges and bottomless drops to avoid-or jostle your opponents into! The trick here is to figure out the quickest route when the course branches into two different paths, all the while avoiding the roaming Goombas, staying on the dirt track, and using the famous giant mushrooms as trampolines!"
 * Trading Card bio: "Get ready for some precision mushroom-bouncing action on this track! Upon entering the cavern, staying to the right seems to be the path most racers will travel. However, taking the path to the left will surely allow you to get a better shot at scoring a useful Item from the plentiful Item Boxes."

Tournaments
The second tournament of June 2008 was a Time Trial of Mushroom Gorge. However, the course had to be driven through backwards. Ramps were added to the beginnings of the mushroom paths (or else it would be impossible to land on them without falling off). The same tournament later appeared as the second tournament of June 2010, the first tournament of December 2011, the second tournament of February 2013, and finally the only tournament of May 2014, the final tournament before the discontinuation of Nintendo Wi-Fi Connection service.