The trail's use as an active migration route ended with the completion of the transcontinental railroad in 1869, which let Latter-day Saint converts and settlers reach Utah by train in days rather than the roughly three to four months the wagon and handcart journey had required. The route itself, however, has remained central to Latter-day Saint identity and was designated the Mormon Pioneer National Historic Trail by the United States Congress in 1978, administered by the National Park Service in cooperation with state agencies across Illinois, Iowa, Nebraska, Wyoming and Utah, with markers, visitor centers and preserved sites along its roughly 2,100-kilometer length.
Within the church, the trail is commemorated less as a historical curiosity than as a devotional exercise still actively practiced. Latter-day Saint youth organizations regularly stage multi-day pioneer treks, in which teenagers dress in period clothing and pull replica handcarts over preserved sections of trail, most often in Wyoming near the site of the Willie and Martin companies' ordeal, as a deliberate act of remembrance meant to connect a contemporary generation to the sacrifice the trek's history represents. Pioneer Day, July 24, commemorating the vanguard company's 1847 arrival in the Salt Lake Valley, remains a state holiday in Utah and a significant date on the Latter-day Saint calendar, marked with parades and reenactments that draw directly on the trail's memory.