Hackathons

Where Solana Builders Compete

Colosseum runs Solana's official hackathons — a couple of scheduled flagship events a year, and a rolling, always-open track in between for builders who want to start now.

80,000+

Builders

6,500+

Products Launched

$700M

Raised by Winners

via colosseum.com

Eternal Challenge 2026 H2Open203+ builders in the arena

Window closes—

Flagship Event

Starts in 22 days

Colosseum Fall 2026

Sep 28 – Nov 2, 2026

Colosseum's scheduled global hackathons draw thousands of builders — the Spring 2026 edition alone saw 10,000+ participants and 2,850+ submissions, with top teams earning a spot in Colosseum's accelerator.

View on Colosseum

Always Open

Open year-round

Colosseum Eternal

Start your own 4-week sprint, any time

No need to wait for the next scheduled hackathon — kick off a self-paced 4-week build sprint whenever you're ready. Every submission is eligible for Colosseum's accelerator, and the recurring Eternal Award (a $25,000 USDC grant) is given out twice a year to the standout project.

Start an Eternal sprint

How to participate

Pick a track — join the scheduled flagship window above, or start an Eternal sprint any time.
Build and ship over your 4-week window, submitting progress updates as you go.
Submit a final product, pitch, and technical walkthrough by the deadline.
Top projects are shortlisted for Colosseum's accelerator and grant funding.