The finale of "The Summer I Turned Pretty" (TSITP) Season 3 is expected to be about 77 minutes long, according to leaked information related to an event around the finale screening. This is longer than the typical episode length, which ranges from 40 to 68 minutes. There has been no official confirmation of the exact runtime, but 77 minutes is the most credible reported duration so far for the final episode releasing on September 17, 2025.