The middles of the two are 264 metres apart; a line of the grid every 100 metres.
The picture above was drawn when the docs were built. The script below draws it again with the published package.
import { drawDistrict } from "@johnmorrisdotca/kyogijo-stadiums/district";
const svg = drawDistrict({ venues: ["bc-place", "rogers-arena"] });
This page imports the package from jsDelivr (major version 0), which serves only versions that have been published to npm. A feature added after the last release is not in it: the page then keeps the picture above and says why. The docs were built from version 0.64.0.