---
title: "Hacktoberfest Hack Day Madrid"
date: 2026-10-10T15:00:00+00:00
end_date: 2026-10-10T20:00:00+00:00
location: "Madrid, ES"
format: onsite
type: hackathon
level: open
prize: N/A
tags: "open-source, ai, developer-tools"
url: "https://events.mlh.com/events/14972-hacktoberfest-hack-day-madrid"
canonical: "https://hackathonhub.eu/events/hacktoberfest-hack-day-madrid-madrid-2026"
---

# Hacktoberfest Hack Day Madrid

**Date:** 2026-10-10 — 2026-10-10  
**Location:** Madrid, ES  
**Format:** onsite  
**Type:** hackathon  
**Level:** open  
**Tags:** open-source, ai, developer-tools

The Hacktoberfest Hack Day Madrid is a free, in-person event focused on open source and AI. Participants will work in teams to build projects, explore new tools, and experiment with open-weight models. The day concludes with demonstrations of the completed projects in a collaborative setting.

[Register or learn more](https://events.mlh.com/events/14972-hacktoberfest-hack-day-madrid)

[View on Hackathon Hub](https://hackathonhub.eu/events/hacktoberfest-hack-day-madrid-madrid-2026)