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Updated 2026 Fine Print

Privacy Policy

Endure Weekly is published by Cozy River Studios. This policy explains what information we collect when you read endureweekly.com, use our calculators or subscribe to the newsletter, and how that information is used.

Calculator data

Numbers you type into our calculators (pace, distance, heart rate, body weight and similar) are processed in your browser. We do not send them to our servers or store them.

Email

If you sign up for a free download, your email address is stored by our own Cozy River email system, hosted on Cloudflare. We use it only to send what you asked for and a few related emails. We do not sell or rent your email address. Every email has an unsubscribe link, and unsubscribing removes you from future sends.

Analytics

We use Google Analytics to understand how the site is used. It records things like:

  • Pages visited and time on page
  • Browser and device type
  • General location (country or city level)
  • Which outbound links are clicked, so we can see which guides are useful

Cookies

Google Analytics, our reader-engagement tools and the affiliate programs we link to may set cookies. Affiliate cookies let a retailer know a purchase came from one of our links; they do not change the price you pay. You can block or clear cookies in your browser settings, though some features may not work as expected.

Third-party services

  • Google Analytics, for site analytics
  • Cozy River email, for signup delivery, hosted on Cloudflare
  • Mediavine Grow, for reader-engagement features
  • Cloudflare, for hosting, security and performance
  • Amazon Associates and Backcountry (via Impact), for affiliate links

Each of these services has its own privacy policy governing the information it collects.

Your rights

You can ask us to tell you what information we hold about you, correct it or delete it, and you can opt out of analytics with a browser extension or your browser's privacy settings. Depending on where you live (for example, in the EU, UK or California), you may have additional rights under local law.

Children's privacy

This site is not directed at children under 13, and we do not knowingly collect personal information from them.

Changes to this policy

We may update this policy from time to time. Changes will be posted on this page with a new "Updated" date.

Contact

Questions about privacy? Email hello@cozyriverstudios.com, or reply to any issue of the newsletter.

Endure Weekly

A field journal for ultrarunners. Weekly Wednesday letter, careful gear notes, and calculators that respect your kilometers.

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