As dem TeXbook, [The TeXbook](https://ctan.org/pkg/texbook), Kapitel 10 “Dimensions”, S. 58 > TeX will not deal with dimensions whose absolute value is 2³⁰ sp or more. In other words, the maximum legal dimension is slightly less than 16384 pt. This is a distance of about 18.892 feet (5.7583 meters), so it won't cramp your style.

As dem TeXbook, Kapitel 10 “Dimensions”, S. 58 > TeX will not deal with dimensions whose absolute value is 2³⁰ sp or more. In other words, the maximum legal dimension is slightly less than 16384 pt. This is a distance of about 18.892 feet (5.7583 meters), so it won't cramp your style.