BEFORE TRAVELING TO ANY MEET, always confirm the details with somebody at the meet itself, because schedules do change, and it’s not uncommon for websites (yes, us too) to go an extended time between updatings.
These listings are restricted to high-quality outdoor meets to be contested in the U.S. A very deep compilation of domestic competitions at all levels including detailed contact information for all meets is produced by USATF. Their searchable calendar is available here. Additionally, the collegiately oriented USTFCCCA produces a deep schedule of meets and results. That “InfoZone” can be found here.
These listings are restricted to high-quality indoor meets to be contested in the U.S. The USTFCCCA produces a deep schedule of collegiate meets every weekend during the season. That can be found here.