Comcast’s Xfinity brand is ending its sponsorship of NASCAR’s second-tier Xfinity Series at the end of the 2025 season before evolving into a different sponsorship role within NASCAR, the association said Tuesday.

NASCAR Xfinity Schedule has seen quite a few shake-ups. 33 races make up the 2025 schedule. Here are the five most intriguing races on the calendar for NASCAR's second-tier series.

NASCAR's second-tier series has been known as the Xfinity Series for a decade. After this year, that series will take on a new label.