Cube Against Cancer Colorado 2026

Info Register Competitors

Date: May 3, 2026
City: Castle Rock, Colorado, United States
Venue: Douglas County Fairgrounds
Address: 500 Fairgrounds Rd, Castle Rock, CO 80104
Details: Kirk Hall
Contact: Organization team
Organizers: Abhi Chawla and Colorado Cubers
WCA Delegates: Luke Meszar, Miles Walcott, Raymos Castillo, Stone Amsbaugh, and TJ Kelly

: Download all the competition's details as PDF here.

Information: This competition is a part of the Cube Against Cancer competition series in collaboration with Ethan's Ohana. We are asking that all competitors bring at least one unopened 3x3 cube or STEM-related item, which will be donated to a pediatric cancer patient. See the Cube Against Cancer tab for more information.

Events
Main event

Competitor limit: 110

Number of times bookmarked: 23

Registration period: Online registration opened and will close .
Registration requirements: Create a WCA account here if you don't have one.
If this is not your first competition, associate your WCA ID to your WCA account here.
Register for this competition here.
There is a competitor limit of 110 competitors.
The base registration fee for this competition is $20 (United States Dollar).
The registration fee has to be paid through Stripe here once registered.
If your registration is cancelled before you will be refunded 50% of your registration fee.
Registrants on the waiting list may be accepted onto the competitor list until .
If you are a registered competitor you may change your registered events until on the Register tab.
No on the spot registrations will be accepted.

Competitor's must read the required tabs above before registering.

How to Change/Cancel Your Registration

Competitors can modify their registration through the Register tab.

Competitors can also change or cancel by emailing the organization team with the following information:
1. Intent to change/cancel registration
2. Desired changes to registration
3. Name (and WCA ID, if applicable) of the competitor.

In the event that a competitor cancels their registration, they will only receive a 50% refund.

The deadline to change/cancel your registration is May 5th, 2026 6:00 PM Mountain Time.

Waitlist Procedure

If registration fills up, we will place competitors on a waitlist. In the event a competitor drops from the competition, competitors will be accepted from the waitlist in the order we receive payment up until registration closes.

IF THE COMPETITION FILLS UP AND A WAITLIST EXISTS, WE WILL NOT BE OFFERING ON THE SPOT REGISTRATION. CHECK BEFORE COMING!

ALL COMPETITORS MUST READ THIS TAB BEFORE REGISTERING.

Competitions rely on volunteers to happen! All the staff at competitions are volunteers, and we need your help to have a successful competition. Helping out by running and judging is invaluable and keeps the competition on schedule. Everyone can help, this includes first time competitors and even siblings and parents! Staffing is easy and we are happy to help get you started, and it is a great way to make time fly!

Before the competition, you will receive assignments to compete, as well as to staff (judging, running, or possibly scrambling). You are required to show up for these staffing assignments unless you communicate with the organizers of the competition prior to the assignment. Failure to do so may result in disqualification from one or multiple events.

For second rounds and finals, we will not have assigned staff, and we will rely on volunteers to make the competition run. We really appreciate it if we get volunteers, but if you are asked to staff by a delegate when you are available you must do so to avoid the same risk of disqualification.

BY REGISTERING, YOU AGREE THAT YOU UNDERSTAND AND WILL FOLLOW ALL THE INFORMATION LISTED ABOVE.

For those of you new to cubing, welcome! We just ask that you know a couple things before coming to compete...
First, please be familiar with the WCA Regulations, found here.
Here are some frequently asked questions:

Q: Are there any restrictions on competing?
A: Nope! Anyone of any skill can compete in this competition, including first-timers. As long as you know how to solve the cube, go ahead and sign up!

Q: Do spectators have to pay?
A: No! All spectators are let into building for free.

Q: Do I use my own cube to compete?
A: Yes! You are responsible for your own hardware in order to compete. We heavily discourage borrowing or sharing other people's cubes at the competition.

Q: How do I find results?
A: All results are posted on the WCA page a couple of days after the competition finishes. However, for the day of competing, go to wca.link/live to find information about current events.

Q: Why am I not on the registration list yet?
A: When you register, make sure you have paid the registration fee. Afterwards, your registration must then be manually accepted, so please wait at least 24 hours before contacting us. You should receive an email when your registration is accepted.

Q: What is the normal age of competitors at these events?
A: All ages are welcome, but in general competitors are between 10 and 20 years old. Don't let this stop you though, everyone can cube!

Q: Are there age divisions?
A: No! All competitors are on an equal playing field.

If you have any other questions, feel free to contact us by using the contact links on the general info page!

If you would like to be notified of future competitions in the state of Colorado, please sign up for the Colorado Cubers newsletter! This newsletter will notify you of future competitions in the state of Colorado when they are announced, and will provide you with monthly updates with news and results.

To subscribe, please see the landing page here.

This competition is a part of the Cube Against Cancer competition series. To support our mission, please bring at least one unopened 3x3 cube or other STEM-related item, which will be donated to a pediatric cancer patient. Possible STEM toys include LEGOs, other puzzles, Snap Circuits, and anything similar.

Cube Against Cancer is in collaboration with Ethan’s Ohana, a charity founded by Brian Perry in honor of his son Ethan. Ethan battled T-Cell Lymphoblastic Lymphoma, and during treatment, Ethan learned to solve the cube and became obsessed. The cube provided great comfort to Ethan during his treatment, but tragically, Ethan lost his battle with cancer on March 25, 2021. Ethan’s Ohana honors his legacy by donating cubes, puzzles, and toys to pediatric cancer patients. You can learn more about Ethan’s Ohana at EthansOhana.org

Cube Against Cancer began in Houston in 2023 and has donated over 1500 cubes to date. In 2025, competitions expanded across the United States. Throughout the first half of 2026, competitions are being held throughout the world, all aiming to provide comfort through cubes and STEM items to cancer patients. To learn more about Cube Against Cancer, please visit CubeAgainstCancer.org

Time limit

If you reach the time limit during your solve, the judge will stop you and your result will be DNF (see Regulation A1a4).

Cutoff

The result to beat to proceed to the second phase of a cutoff round (see Regulation 9g).

Format

The format describes how to determine the ranking of competitors based on their results. The list of allowed formats per event is described in Regulation 9b. See Regulation 9f for a description of each format.