You can add your events for free directly into EventUpon or use EventBrite or TicketLeap.
Events in EventUpon get visibility on all EventUpon.com sites and are indexed by Google for improved SEO (Search Engine Optimization) - all for free.
EventUpon already pulls events in thousands of ways so we may already have your events.
Event Promotion is a pay per day service for greater visibility.

Add an EventUpon calendar to your website and it will be automatically populated with your events for free.
Build a Community Calendar for your website by specifying organizations that you want on your EventUpon calendar (first org is free).
Community Calendars work on any website and EventUpon comes in a special plugin for WordPress websites called AutoPOP.

Search the most complete events catalog without an EventUpon account.

Catch Events with EventUpon's Advanced Search Capabilities or Follow Curators who Make Event Recommendations.
EventUpon display events based on your activity in EventUpon.