The whole system of rings, gaps and all, begins about 40,000 miles (64,000 km) out from Saturn’s equator and ends 290,000 miles (464,000 km) from the surface.
That’s 250,000 miles (400,000 km) of rings and gaps.
The particles are not spread out on a single plane, but the rings are very thin.
Compared to the great distance the rings reach, their width is minute: only a few miles (kilometers) thick.
The size of the individual rings varies.
The largest ring, the B ring, extends for 15,000 miles (24,000 km).