Critical Mass is a worldwide movement, born in San Francisco in 1992, where cyclists meet on the last Friday of every month and ride together through city streets. Not a protest, a celebration - and an obvious-once-you-see-it argument that bicycles are real urban transportation, not toys. In Portugal it runs in Porto, Lisboa, Coimbra, and a growing list of smaller cities, organised entirely by volunteers, and until recently every chapter ran on its own scattered Instagram pages and WhatsApp groups.

massacritica.pt is the home I built for the whole movement: a single bilingual (PT/EN) site that lists every city’s monthly ride, surfaces upcoming events, hosts blog posts about cycling advocacy, and gives organisers a non-technical way to keep their content fresh. Built with Astro and TailwindCSS, internationalised via Paraglide.js for type-safe translations. Content management started on Sveltia CMS and recently migrated to emdash, Cloudflare’s new WordPress-style publishing platform, so contributors can edit through a friendly UI without ever touching git directly. Deployed to Cloudflare for fast edge rendering anywhere in the country.

The repo is open at github.com/afonsojramos/critical-mass - community pull requests for new cities and ride reports very welcome.