Privacy
What this site does and doesn't collect.
What I collect
Nothing identifying. There are no accounts, no sign-ups, and no personal data stored on a server. The site is a set of static pages served from GitHub Pages.
What stays in your browser
Your settings on the Pace table, Race predictor, and Splits calculator
(chosen distances, units, target times) are stored in your browser's
localStorage. They never leave your device. Clear your
browser data and they're gone.
Analytics
Page views are counted by GoatCounter, a privacy-friendly analytics service that does not use cookies and does not track individuals across sites. The data collected is the page you viewed, your country (approximated from IP, not stored), browser/OS, and the referring site.
Affiliate links
Outbound links to Amazon are affiliate links. When you click one, Amazon may set its own cookies to attribute any purchase you make to this site. That happens on Amazon's domain, so I don't see your purchase details, just an aggregated commission report from Amazon. See the affiliate disclosure for details.