Most XML sitemaps live at yoursite.com/sitemap.xml or yoursite.com/sitemap_index.xml because those are default paths for WordPress, Shopify, and most CMS platforms. Type those URLs directly into your browser—if the sitemap exists and isn't blocked, you'll see the XML structure immediately. If that fails, check the robots.txt file at yoursite.com/robots.txt. Sites often declare their sitemap location there with a line like "Sitemap: https://yoursite.com/sitemap.xml". This method works for about 70–80% of professionally managed sites because it's a standard protocol directive. For sites without obvious paths, log into Google Search Console if you have access. Navigate to Sitemaps under the Indexing menu—any submitted sitemaps appear there with their full URLs and submission dates. Bing Webmaster Tools has an identical feature. This approach only works for domains you control or have verification rights to. When auditing competitor sites or client handovers where you lack backend access, use Screaming Frog SEO Spider. Run a crawl in Spider mode, then check the Sitemaps tab—it automatically discovers sitemaps linked in robots.txt or referenced in HTML. Sitebulb and other enterprise crawlers do the same thing. At Ottawa SEO, we encounter sites with non-standard paths like /sitemap-index.xml, /sitemap1.xml, or /sitemaps/sitemap.xml about 15% of the time, usually on custom-built platforms or older Drupal installs. Some sites split sitemaps by content type—posts, pages, products, categories. WordPress with Yoast or Rank Math typically generates /post-sitemap.xml, /page-sitemap.xml, and so on, all referenced in a master sitemap_index.xml file. If you find one, you've likely found them all. Occasionally a sitemap exists but returns a 403 or 404 due to server misconfiguration, .htaccess rules, or firewall blocks. If competitors' sitemaps are inaccessible but their site indexes well, they likely submit directly to Search Console without public exposure—a valid but less transparent setup. Always verify submission status in GSC before assuming a sitemap doesn't exist.