1. The Transcontinental Railroad was completed in Utah on June 4, 1869. This historic event connected the east and west coasts of the United States for the first time and dramatically changed transportation and communication in the country. Thousands of workers, including Chinese immigrants, worked tirelessly for six years to lay the tracks that would create a unified country.

2. In 1913, Utah became the 36th state to ratify the 17th Amendment, which allowed for direct election of U.S. senators. Prior to this amendment, senators were elected by state legislatures, which often led to corruption and concerns about representing the will of the people.

3. On June 4, 1943, the U.S. Army's Dugway Proving Ground was established in Utah. This facility was established to test chemical and biological weapons during World War II and continues to operate today as a military testing and training site.

4. The Great Salt Lake Marathon, one of the oldest marathons in the United States, is traditionally held on the first Saturday in June, which often falls on or around June 4. The course winds through the city of Salt Lake and around the Great Salt Lake, providing a unique and challenging race experience for runners.

5. In 1979, the Church of Jesus Christ of Latter-day Saints (LDS) announced that black men could hold the priesthood and participate in temple ordinances. This historic statement marked a significant step forward in the LDS Church's efforts to address racial inequality and discrimination. The announcement was made on June 8, but the decision was reportedly made on June 4, which has since become known as "the day the priesthood was restored."