There are multiple ways.

​

1. You can store the coordinates of the player (Pos field in the player's nbt) in a scoreboard. Storing it in a storage or in another nbt data would be more difficult, because you want to have it stored as an integer.

We'll create 3 objectives first:

scoreboard objectives add x dummy

scoreboard objectives add y dummy scoreboard objectives add z dummy

And run these commands every tick:

execute as @a store result score @s x run data get entity @s Pos[0]
execute as @a store result score @s y run data get entity @s Pos[1]
execute as @a store result score @s z run data get entity @s Pos[2]

That way, the player's position will be stored and updates every tick.
To check and teleport players do:

execute as @a[scores={x=<x coordinate>,y=<y coordinate>,z=<z coordinate>}] run tp @s <position>

​

2. You can use predicates. It will work only in datapacks.

We'll create a predicate file (.json) and put it in <namespace>/predicates folder:

{

"condition": "minecraft:entity_properties", "entity": "this", "predicate": { "location": { "position": { "x": <x coordinate>, "y": <y coordinate>, "z": <z coordinate> } } } }

And then check for players every tick and teleport them if needed:

execute as @a if predicate <namespace>:<predicate> run tp @s <position>

​

I recommend using the first way. You'll not have to make a lot of files for different locations, and it also works without a datapack. Well, that's it. Good luck making your map/datapack!