Public and private partnerships in south Kansas City preserve three National Historic Trails that reflect 19th century exploration and migration through the region. After Meriwether Lewis and William Clark passed through in 1804 on their mission to find a waterway to the Pacific, the Santa Fe, Oregon, and California Trails became major routes between the 1820s and the 1870s, with all three sharing a 46-mile overland route from near Independence, Missouri, to just west of present-day Gardner, Kansas, now known as the 3-Trails Corridor. The Santa Fe Trail later departed from Westport and carried commercial travelers southwest, while the Oregon and California Trails carried families and gold prospectors north and west. Railroads ended the height of overland travel, but Kansas City remained a crossroads as highways later followed old trail routes, and the National Parks and Recreation Act of 1978 created the National Historic Trail designation to protect them. Local historians, planners, activists, volunteers, and officials have worked for decades to document and preserve visible trail remnants, including wagon swales and historic crossings, while expanding public interpretation and retracing the corridor for recreation and economic development. The region is also connected to figures and episodes from trail history, including Daniel Morgan Boone, Jim Bridger, Susan Shelby Magoffin, the Donner-Reed party, Emily Fisher, Biddy Mason, and Clara Brown, and local efforts have certified sites such as New Santa Fe Cemetery and Palestine Cemetery, improved trail access with pedestrian bridges and transit memorials, and advanced long-range plans to define, protect, and reconnect retraceable segments of the historic routes.