Typically, conference length depends on the following:
How many different topics there are
What type of conference it is (training session, etc)
How many speakers you have
A conference can last for a single day, multiple days, a week or multiple weeks. Past RTW organizers typically schedule 1-2 talks per day, 2-3 days per week to pace out the conference, allowing enough time for attendees to process and absorb the information delivered to them. It also gives them free time to make connections with other attendees. Keep in mind that your conference doesn’t go on for too long to ensure energy and enthusiasm