---
title: "Hackathon Across 2026: Innovating for Water in the Cross-Border Mediterranean Region"
date: 2026-11-20T00:00:00+00:00
end_date: 2026-11-22T00:00:00+00:00
location: "Perpignan, FR"
format: onsite
type: hackathon
level: open
prize: N/A
tags: "sustainability, climatetech, smart-cities, social-impact, reproducible-research"
url: "https://www.across-alliance.eu/hackathon-across-2026-innovating-for-water-in-the-cross-border-mediterranean-region/"
canonical: "https://hackathonhub.eu/events/hackathon-across-2026-innovating-for-water-in-the-cross-border-mediterranean-region-perpignan-2026"
---

# Hackathon Across 2026: Innovating for Water in the Cross-Border Mediterranean Region

**Date:** 2026-11-20 — 2026-11-22  
**Location:** Perpignan, FR  
**Format:** onsite  
**Type:** hackathon  
**Level:** open  
**Tags:** sustainability, climatetech, smart-cities, social-impact, reproducible-research

The Across Hackathon 2026 will take place in Perpignan and Girona, focusing on developing innovative solutions for water challenges in the Mediterranean region. Over 53 hours, multidisciplinary teams will work on six specific challenges addressing the entire water cycle. The event aims to strengthen collaboration between universities, research institutions, businesses, and citizens, offering the winners a six-month pre-incubation program and additional prizes.

[Register or learn more](https://www.across-alliance.eu/hackathon-across-2026-innovating-for-water-in-the-cross-border-mediterranean-region/)

[View on Hackathon Hub](https://hackathonhub.eu/events/hackathon-across-2026-innovating-for-water-in-the-cross-border-mediterranean-region-perpignan-2026)