What are the best ways to promote an online hackathon?

Partner Up: Reach out to blogs, newsletters, and podcasts in your niche. Do an exchange with them. They promote you and you promote them at your hackathon. Eventbrite: Create an event in Eventbrite.com (and other event listing sites). Eventbrite events are well indexed and the site gets a lot of traffic. Twitter: find people talking about hackathons. Let them know about yours Go to https://devpost.com/hackathons and list your event there. Good luck! -Bill https://FixMyGrowth.com