Never used any 1-wire devices but internet seems to suggest that the maximum cable lenght is anywhere between 100m and 300m, or even 500m with a master supporting active pullup so your 50m seems doable.

Are the 8 sensors distributed along the 50m length cable or are they connected with stubs (of any considerable length)? If stubs are used adding a series resistor to each stub will help with reflections caused by the impedance mismatch but will also have a negative effect on noise immunity. (I got all that from this Analog Devices article: https://www.analog.com/en/technical-...-networks.html )

Have you actually tried this and noticed any issues or are you just concerned about possible problems?