March Madness Sites 2025. According to ncaa.com, new york, greensboro, s.c., and indianapolis are the active leaders in march madness games hosted. As is tradition, the 2025 first four will be held in dayton, ohio at the university of dayton arena.

March madness 2025 begins with first four games tuesday, march 18, in dayton, ohio, and ends with the final four on april 5 and 7 at the alamodome in san antonio. The 2025 ncaa men’s basketball tournament will begin on march 18 with the first four games in dayton, played by the last four teams selected into the tournament.