Hackathons are timed building events where developers, designers, and creators team up to solve real problems. You get 24 to 48 hours. That’s it. What you build in that window could change everything.
If you’ve ever been curious about where the biggest ones happen and what makes them worth your time — you’re in the right place.
What Makes a Hackathon “Big”?
The event’s size alone doesn’t make a hackathon worth attending. It’s the combination of reach, resources, and real-world impact that separates the legendary ones from the rest.
Scale and Reach
- Some events pull in 30,000+ participants from 150+ countries
- Online formats have removed every geographic barrier that used to exist
- More participants means more diverse ideas and tougher competition
Prizes and Backing
- Top hackathons offer anywhere from $50,000 to over $1 million in prizes
- Sponsors like Google, NASA, and Meta don’t just write checks — they offer mentorship and hiring pipelines
- Winners sometimes walk away with startup funding, not just cash
Long-Term Impact
- Several well-known tech products like GroupMe, Zapier were born at hackathons
- Some of the most successful products/features in tech were born at a hackathon — GroupMe sold for $85 million after a single sprint, and even Facebook’s Like Button and Timeline feature came out of internal hackathons.
- Placing highly at a major event signals to employers that you work well under pressure
- The connections you make often matter more than the prize itself
The Biggest Hackathons Worth Knowing About
The following hackathons are not only competitions. They’ve become landmarks in the global tech calendar.
NASA Space Apps Challenge
- Biggest hackathon on the planet — 30,000+ participants across 150+ countries
- Teams use real NASA data to solve space and Earth-related challenges
- Winning teams present solutions directly to NASA scientists
HackMIT
- One of the most competitive university hackathons in the world, held at MIT
- Over $100,000 in prizes, with judges who are actual industry insiders
- Highly selective — getting in is an achievement on its own
PennApps
- Running since 2009 — one of the oldest collegiate hackathons still going strong
- Covers hardware, AI, social good, and software tracks
- Known for being welcoming to first-timers while still being a serious competition
Hack the North
- Canada’s largest hackathon at the University of Waterloo — 36-hour sprint
- $60,000+ CAD in prizes with top sponsors like Google and Shopify
- Well-organized and beginner-friendly — one of the best first hackathons to try
TechCrunch Disrupt Hackathon
- Runs alongside the TechCrunch conference — your demo gets seen by real VCs
- 24 hours to build, then you pitch it live to journalists and investors
- Open to everyone, not just students — real companies have come out of this
Junction Hackathon
- Europe’s biggest hackathon goes down every year in Helsinki through hackjunction.com
- Over 1,500 hackers from 100+ countries spend 48 hours building solutions to real company challenges
- Prize pool hits €50,000+ with €10,000 for the winning team
- Partners include Supercell, Pfizer, and Google Cloud
- Winning Junction is huge for your career in European tech
Major League Hacking (MLH)
- Not one event — an entire ecosystem of 200+ sanctioned hackathons a year
- Local Hack Day brings thousands of global participants together in a single day
- The best starting point if you want to build a regular hacking habit
Facebook Hacker Cup
- Meta’s annual global programming competition open to developers worldwide
- Runs in multiple rounds — from qualification all the way to the finals
- Thousands of programmers compete across 100+ countries every year
- Top finishers get invited to Meta’s headquarters for the final round
- Winning here is a massive signal to any tech recruiter that you’re elite
Codeforces Rounds
- One of the most active competitive programming communities in the world
- Hosts multiple hackathon-style rounds every single week — no waiting around
- Rated system means every round directly impacts your global developer ranking
- Attracts some of the sharpest competitive programmers on the planet
- Perfect for developers who want to sharpen problem-solving skills consistently
Why Should You Attend These Hackathons?
Here’s the honest truth — most people who participate in these events don’t win. But almost everyone who attends one of these, says it was worth it.
There’s something about the format that forces growth really fast. You can’t overthink. You can’t wait for the perfect conditions. You just build. That kind of real-time problem-solving is genuinely hard to practice anywhere else.
Beyond the skills, the networking possibility is unreal. You’ll find yourself working next to someone who ends up being your co-founder two years later, or talking to a recruiter from a company you’d love to work at. These things happen at hackathons all the time.
And if you do manage to place? That goes on your resume and it stays there. Hiring managers notice it.
How does Airmeet Help You Run Your Own Hackathon?
Competing in a hackathon is one thing. Hosting is another. If you’re an organizer looking to run a hackathon — whether it’s for your company, university, or community — you need a platform that can actually keep up.
Airmeet’s virtual event platform is built for exactly this kind of high-energy, high-participation format. Live sessions, breakout rooms, networking lounges, real time Q&A and project submission tools are brought together in a single place. Participants can team up, meet mentors, and stay engaged throughout — not just during the main sessions.
You can also check out Airmeet’s guide to hosting virtual hackathons and browse hackathon project ideas to get your participants inspired from day one. It’s everything you need to run an event that people will actually talk about.
Conclusion
The world’s biggest hackathons are proof that great ideas don’t need perfect conditions — they just need a deadline and the right people in the room.
Whether you want to compete, learn, network, or host your own event, the hackathon space has room for you. Start with something local or online if you’re new to it. Work your way up. And don’t go in just trying to win — go in trying to build something you’re proud of.
That mindset tends to take people further than anything else.
FAQ
Here are the things you’ll need, in order to be hackathon-ready.
- A clear idea of your strengths so you can find teammates who fill the gaps
- Familiarity with tools and APIs you might use during the event
- A few rough project concepts — you don’t need a final idea, just starting points
- Snacks, a charger, and the mindset that things will go sideways at some point
- An open attitude — the best hackathon moments are usually unplanned
- No, hackathons like PennApps and Hack the North are open to beginners.
- Newer participants are specifically assigned mentors at most hackathons (both online and in-person).
- Non-coders are just as welcome — design, research, and storytelling have value.
- MLH or a local event is a fantastic starting point of low pressure.
- Good attendance and attempting is actually appreciated in the hackathon community.
Yes — and in some ways it’s even better. Virtual hackathons have opened the doors for participants across the world who’d never be able to afford travel to MIT or San Francisco. When the platform is set up right, with networking lounges, live mentor sessions, and real team collaboration tools, the energy comes through. It’s different from being in the same room, sure. But the focus, the late nights, and that rush when something finally works? That part translates perfectly.
