Privacy Policy
The short version: everything you type stays in your browser. Here is the full picture.
What PaceLab collects
Nothing you enter into the calculators. Every calculation (pace, finish time, distance, predictions, splits and conversions) runs as JavaScript in your browser tab. The numbers you type are never sent to a server, never stored and never shared. There are no accounts, no cookies set by us and no third-party tracking or advertising scripts.
Hosting
The site is served as static pages by Vercel, our hosting provider. Like any web host, Vercel processes standard technical request data (such as your IP address and browser user agent) to deliver the pages and keep the service secure. PaceLab does not use this data to identify or profile visitors.
External services
Pages load fonts that are bundled with the site at build time, so no font requests go to third parties while you browse. The calculators work entirely offline once a page has loaded.
Changes and contact
If the way the site works ever changes (for example, if analytics or ads are added), this page will be updated first. Questions about this policy? See the about page for more on how the site is built.
Last updated: July 2026.