Citrus Hack

April 9-11, 2021

Create your zen.

Largest hackathon UCR offers

Citrus Hack is where hundreds of students from all over the world come together and form teams, aiming to build a project from scratch in just 36 hours.

This year, Citrus Hack will be held virtually, open to undergraduate and high school students all around the world!



$15,000 IN PRIZES

Choose Your Track

🔒 Security

Projects entered in this category aim to help people feel secure. A sense of security can be the key to a zen state of mind.

Security track rocks


Here are the most commonly asked questions. Feel free to ask us any question you don't see on here.

What is a hackathon?

A hackathon is an event where teams or inviduals rush to make a creative project. Throughout, there will be free workshops intended to guide you in creating your project. At the end of the time slot, contestants have the oppurtunity to demo their projects to judges and win prizes.

Where will we submit?

You can submit through Devpost. Further instructions will follow on the day-of the event.

Can I submit a project I’ve already worked on?

No, you must start working on project code after hacking starts at 9 PM. Projects started before that time or have been submitted to other hackathons will be disqualified. Make sure your submission is unique to Citrus Hack!

How long is Citrus Hack?

Citrus Hack 2021 will be a 36-hour hackathon. Hacking will start at 9 PM (PDT) on Friday (April 9th) and end at 9 AM (PDT) on Sunday, April 11th. The closing ceremony will be held at 1 PM through.

Is Citrus Hack free?


Who can come to Citrus Hack?

Any undergraduate student enrolled in a college can participate, regardless of major. High school students are welcome as well.

When are applications due?

Applications will be accepted on a rolling basis but will close on April 4th.

My question isn't listed!

Email us at and we can answer your questions

What if I’ve never been to a hackathon before?

That’s the best reason to come out! Citrus Hack is open to people of all skill-levels. We’ll be having beginner-oriented workshops and activities, along with mentors to help you turn your project into reality.

What will I need to participate?

A working device (i.e your laptop or PC) and a stable internet connection. And, of course, you.

What if I don’t have a team?

If you don’t have a team formed prior to Citrus Hack, we will have a channel on Discord where you can find other participants that share similar interests. We’ll also be providing activities at the beginning of the event to help you form teams. Teams aren’t required though, so feel free to work individually.

Do I have to hack or make a project?

Not at all! You can attend a workshop just to learn, network with fellow hackers, and participate in games and raffles. You’ll be able to find the schedule on our website as we get closer to the event.

If I’m residing outside of the U.S, can I still attend and/or win a prize?

Those outside of the US can still attend, compete, and win. However, due to shipping restrictions and COVID, we won’t be able to send any physical items to those residing outside of the U.S.

Get Involved

Not interested in hacking but still want to participate?
Fill out the forms below if you'd like to help hackers throughout the day.


Those who made this hackathon possible.

usaf logogcap logoamazon logo
digitalocean logobalsamiq logotwillio logoGoogle Cloud logo1517 logolaunchpad logoacm logolinode logoieee logosketch logowolfram logo