The length of time you run a TikTok ad depends on various factors, including your advertising goals, target audience, and budget. Generally, it is recommended to run a TikTok ad for a minimum of two weeks to give the campaign enough time to gather data and optimize for performance. If you have a limited budget, it’s important to monitor the ad’s performance regularly and adjust your targeting and creative elements as needed. For larger, more complex campaigns, it may make sense to run the ad for a longer period of time, such as a few months. Ultimately, the length of time you run a TikTok ad should be determined by your specific advertising goals and the results you are seeing from your campaign.