Toad Harbor (written as Toad Harbour in the British English version) is the second course of the Flower Cup in Mario Kart 8 and Mario Kart 8 Deluxe, as well as the longest course in the game. This course takes place in a seaside town with some similarities to the city of San Francisco. It also features a statue on an island off the harbor modeled after the Statue of Liberty, but it is based on Princess Peach holding a Fire Flower in her lowered left hand and a Super Star in her raised right. Mario, Luigi and Wario each have cable cars patterned after them in this course, each with some Toads as passengers and a Koopa Troopa as the driver. There are forty-seven coins located on this track. In Mario Kart 8, it is a selectable battle course.
This island track showcases an entire marina with sail boats and a train station (that acts as a short-cut to some power-ups), a market and a shopping area, as well as a vertical wall section with anti-gravity. The track features several areas that seem to be inspired by American cities, such as a steep cable car hill (such as San Francisco) and a Statue of Liberty-like Peach statue in the harbor (like in New York City).
The course starts near the docks with a few boats. After turning right, there are two paths; the right one goes over a bridge while the left path allows players to drive onto a boat with a ramp. Racers will be starting to enter the town after this point. They can continue driving right, though they can either go straight through, take a Dash Panel, or drive on top of the market tents in the area. After that, a shortcut can be taken upon driving over a narrow path and jumping off a ramp.
After a few turns, drivers reach the top of the hill and perform a U-turn past the Toad Toy Store, which provides this course's only anti-gravity section. If players stick to the normal path, they have to avoid oncoming cable cars. If the player attempts to follow the cable car rails after the station, Lakitu will come and hoist the player back to the road. Whichever path was taken, both lead to a steep downhill part of the track leading back to the coastal area, with more cable cars to dodge. If players somehow land on the cable cars going down the steep hill, they will gain a short boost, and can actually perform a trick off of the roof. A pathway with a Dash Panel can be taken, but otherwise, after two turns, the track leads back to the finish line.
This is the only Nitro course among the base Mario Kart 8 content that does not involve any gliding, and the only course among the base content to not feature any mechanics introduced in Mario Kart 7 (gliders, underwater sections, one-lap courses, etc.). It is also one of the two nitro courses where the anti-gravity segments are optional, with the other course being Bone-Dry Dunes.
This is the only Toad course to not have Toad as the staff ghost, as this staff ghost for this track is Toadette on the Cat Cruiser, with a time of 2:31.066. However, the staff ghost is Toad in Mario Kart 8 Deluxe 200cc, with a time of 1:43.003.
This is one of the three courses (along with Mario Circuit and Twisted Mansion) that were playable at E3 2013. Incidentally, all three take place in the Flower Cup, in the same order as the original demo.
* - Indicates downloadable content in Mario Kart 8 • ** - Indicates content available in version 1.6.0 of Mario Kart 8 Deluxe • - Indicates exclusivity to Mario Kart 8 • - Indicates exclusivity to Mario Kart 8 Deluxe