At the high school level, my local district limited an athlete to four events in one track and field meet. Famous sprinters like Carl Lewis have won four gold medals in one meet and other track and field athletes often compete in multiple related events (shotput and discus, sprints and relays, sprints and various jumps, etc.).

Without considering scheduling and logistical conflicts, and the physical limitations of the athlete, is there rule that limits on the number of track and field events that an athlete may enter in one meet, assuming that this athlete had the requisite skill to compete in each entered event?