About Trailhead Timing

Trailhead Timing turns official National Park Service information into planning tools: what a trip's entrance fees add up to, whether an annual pass pays off, which months are busiest at 24 popular parks, and when the sun rises and sets in park time.

We are independent and not affiliated with the National Park Service. We don't sell passes, tours or reservations.

Who runs the site

Trailhead Timing is a small independent website run by the Trailhead Timing editorial team. We are not a manufacturer, retailer, government agency or professional service, and nobody pays us to feature a product or brand. The site launched on Nov 11, 2026.

We do not put names, job titles or credentials on our pages that we cannot back up. Instead, every page shows what it is based on: the formula behind each calculator and a list of the official or reputable sources we checked, with the date we checked them.

How the tools work

Every calculator runs in your browser. Nothing you type is sent to us. Trackers and logs save to your own device (your browser's local storage), so they stay private and disappear if you clear your browser data. There are no accounts.

How the site is paid for

We plan to support the site with advertising in the future. No ads are shown yet.

Some guides contain a small number of clearly marked links to Amazon search results. As an Amazon Associate I earn from qualifying purchases. See our affiliate disclosure.

Get in touch

Corrections and suggestions are welcome on our contact page. Read how we check facts for our standards.