You can travel a maximum of 90 degrees of latitude north or south.

Here's why:

* Latitude lines: Latitude lines are imaginary circles that run east to west around the Earth, parallel to the equator.

* Equator: The equator is the starting point for measuring latitude, at 0 degrees.

* Poles: The North Pole is at 90 degrees North, and the South Pole is at 90 degrees South.

Therefore, the maximum distance you can travel north or south is from the equator (0 degrees) to either pole (90 degrees).