The length of the contest solely depends on you and your time frame. We have launched very successful 3, 5, or 7 day contests. Once your contest is closed you have 30 days to select the winner.
If you are running a Platinum contest or have any additional validation services (Audience Testing and/or Trademark Validation) this will add time to the process. Audience Testing is completed within 3 to 5 days and Trademark Research and Linguistics Analysis adds an additional 1 to 2 days.
Please note that typically the design contest takes a longer time, we recommend a minimum of 5 days