MadData26 Madison, WI, USA Working on real world data problems under a time constraint $1,950 in prizes Feb 21 – 22, 2026 193 participants
MadHacks Fall 2025 Madison, WI, USA MadHacks! Wisconsin’s largest in-person hackathon. A 24-hour event open to all disciplines and all backgrounds. Make something cool! Non-monetary prizes Nov 22 – 23, 2025 384 participants
