It's not known how many of them there are, from wangyue's blog

To locate it You'll need to go to the Jordan Challenge 2K23 MT Building by the Mtn Dew Court as seen in the map below.Once you're there, you'll be able access it by the rail located east of the building or from the one to the west, both having the same benefits.

If you've struggled to grind and you're looking to make sure you have the right path and speed before approaching the rail. To do this, press"A" or "X" on Xbox or Press X in PlayStation to Ollie towards the rail.Once you've made contact, let the side rail carry you up to the corner. don't press anything as you can automatically switch into the rail that is behind that building. Jordan Challenge Building.

If you are able to complete this task successfully from end-to-end, you'll be able to accumulate between 140 to 175 Distance Grinded for NBA 2K23.There are several occasions in MyCAREER in which you'll be required to finish some quests related to executing movements on your skateboard.One of the earliest ones is that of the SI Kids Magazine Cover quest where you're required to meet the following goals:

You'll be able to power through all of them on the above rail with relative ease and tricks on skateboards or any other tricks will aid in completing this.In addition to that various challenges, there's also the gradually increasing Skateboard Grinds-related quests linked to becoming MVP Of The City.

It's not known how many of them there are, but completing each of them (1,600 Distance or 8,000 Distance) will reward you with more MVP Points.There are probably many more skateboard quests we've yet to discover however this rail at the Jordan Challenge Building should help you with each Buy NBA 2K23 MT .Another quest with skateboard challenges is Ollie Oop! that will give you an easy set of the same goals above: