El Camino Real de Tierra Adentro Map.
El Camino Real de Tierra Adentro, the “Royal Road of the Interior,” was the earliest Euro-American trade route in the United States. The trail spans 404 miles in the United States, descending the Rio Grande Valley from San Juan Pueblo, New Mexico, to El Paso, Texas. From there, the trail continued roughly 1,000 miles south to Mexico City. This Spanish colonial “royal road” represents 300 years of history, helping make possible Spanish exploration, conquest, colonization, settlement, religious conversion, and military occupation of a large borderland area from 1598 to 1885. For a time, it also enjoyed the distinction of being the longest road in North America.
Long before the Spanish arrived in the area, American Indians had already established trade routes for commerce between tribes and the ancient cultures in present-day Mexico. These footpaths, such as the Rio Grande Pueblo Indian Trail, were likely established around 1000 AD and branched throughout the northern Rio Grande region, spanning south through the Rio Grande Valley. When Spanish explorers first entered the area in the early 1500s, American Indian peoples often guided them through the unfamiliar and daunting landscape.
Spanish Conquistador.
Spanish conquistadors and colonizers created what would eventually be known as El Camino Real de Tierra Adentro by connecting the old indigenous footpaths and Mexican trade routes. In 1598, explorer Juan de Onate led the first colonization expedition 1,500 miles north of Zacatecas, Mexico, into present-day New Mexico. Onate and settlers and herds of cattle traveled through the arid Chihuahua Desert and crossed the Rio Grande at modern-day El Paso. The journey continued north through Las Cruces, Socorro, Belen, Albuquerque, and Ohkay Owingeh (San Juan Pueblo), which Onate declared the capital of New Spain. The final leg of the Onate expedition brought it to Santa Fe in 1603. Onate’s trail from Zacatecas to Santa Fe completed what would be known as El Camino Real, connecting New Spain’s interior to Mexico City.
For the next 300 years, El Camino Real was the only wagon road into New Mexico and the Southwest, bringing thousands of colonists, missionaries, and supply caravans from Southern New Spain into newly established Spanish towns that dotted the Rio Grande. The trail facilitated the introduction of horses, cattle, European agriculture and irrigation systems, exotic flora, and many cultural practices that still flourish in the region today. Many historic campgrounds and early settlements created by Spanish colonists along El Camino Real have evolved into today’s modern cities along the Rio Grande.
In 1600, the capital of Nuevo, Mexico, was moved from Ohkay Owingeh (San Juan Pueblo) to nearby San Gabriel del Yunque, and in 1610, it was moved for the last time to Santa Fe. Once these settlements were established, the trail became a lifeline to central Mexico, serving as the principal avenue of communication, commerce, and religious conversion.
Ohkay Owingeh Dancers, courtesy Wikipedia.
Goods flowed back and forth, carried in wagon caravans, transporting livestock, royal decrees, mail, and mission supplies. People headed north included settlers and newly-appointed officials, while those headed south included retiring officials, friars, traders, convicts, and prisoners of war.
Traffic over the trail abruptly stopped in 1680 when the Pueblo Revolt erupted, which forced all Spanish residents to leave Nuevo, Mexico, and retreat south to the Rio Grande Valley. Three missions were built during their stay in that area: Isleta, Socorro, and San Elizario, all of which still stand. In 1692, however, under Diego de Vargas, the Spanish army reconquered New Mexico and recolonized the formerly abandoned pueblos and missions.
The trail remained active throughout the Spanish period until 1821, when Mexico claimed its independence from Spain. At this time, New Mexico was supplied by both Camino Real and the Santa Fe Trail from the northeast. After the Civil War, El Camino Real began to wane. Long-distance traffic over the trail ceased when the Atchison, Topeka, and Santa Fe Railroad was completed from eastern Kansas to Santa Fe in February 1880 and El Paso in June 1881.
This historic route in the United States became a National Historic Trail in 2000. It is administered by the National Park Service and the Bureau of Land Management in partnership with numerous landowners, tribes, and other agencies. Many historical destinations in the National Register of Historic Places are along the trail. Hiking trails welcome travelers and tourists along the historic route, and much of El Camino Real is easily accessible by car.
El Rancho de las Golondrinas, courtesy USA Today.
There are many historic sites along this historic path. Some of them include the following:
El Rancho de las Golondrinas, translated to The Ranch of the Swallows, was a ranch established by Spanish colonists in about 1710. One of the oldest, continually operating ranches in the Southwest, it once served as a rest stop and trading point along El Camino Real. Today, a living history museum featuring 33 historic buildings includes plazas, a mountain village, a working water mill, a church, a schoolhouse, a blacksmith shop, a general store, a winery, and other adobe and log buildings. The museum interprets the heritage and culture of 18th and 19th-century New Mexico. It is located about 15 miles south of Santa Fe.
Santa Fe was a thriving center of commerce, especially after the Santa Fe Trail connected New Mexico to the eastern United States for the first time in 1821. The Old Spanish Trail connected Santa Fe to the west coast, passing through Los Angeles, California, in 1829. With the three trails feeding the market from the south, west, and east, the Santa Fe Plaza at the town center became a teeming hotspot for trade and social interaction. The plaza is a National Historic Landmark listed in the National Register. It features buildings constructed in the Pueblo, Spanish, and Territorial styles that reflect the diverse cultural history of Santa Fe. The Palace of the Governors, located on the north side of the Plaza, is well worth a visit. Built in 1610, it is the oldest continuously occupied governmental building in the United States. The palace is a National Historic Landmark and a museum.
Mesilla, New Mexico Church by Kathy Alexander.
Like Santa Fe, commerce and cultural exchange greatly benefited many towns along the trail. One of the most intact is Mesilla, New Mexico, established in 1848. It helps take visitors back in time through extant colonial architecture, museums, and cultural programming. The town’s central plaza is listed in the National Register of Historic Places and is designated as a National Historic Landmark. It is home to quaint gift shops, galleries, and dining establishments, and hosts cultural events such as the annual Cinco de Mayo celebration.
Fort Selden, New Mexico, by the National Park Service.
The early days of El Camino Real brought waves of friars and priests into New Mexico, who built missions among the native Pueblo people and converted them to Christianity. Dozens of missions were built at the larger pueblos; many still exist and are in use today. The Ysleta and Franciscan Socorro Missions in El Paso, Texas, were established to assist displaced American Indians who had fled the Pueblo Revolt in 1680. Both are on the National Register of Historic Places.
El Camino Real also boasts a strong connection to Civil War History as the trail continued to be heavily used throughout the 1860s. For example, the Register-listed Presidio Chapel of San Elizario in El Paso housed volunteer fighters from California stationed there to prevent the reoccupation of the area by Confederate forces. Visitors may also enjoy visiting Fort Selden State Monument in Radium Springs. Established in 1865, the adobe structure housed units of the US Infantry and Cavalry, meant to protect new settlers from hostile American Indian tribes. African American units, referred to as Buffalo Soldiers, were stationed at the fort. The site features a visitors’ center, exhibit space, and guided tours.
Kuaua Ruin, Bernalillo, New Mexico.
Visitors to the El Camino Real National Historic Trail have many opportunities to learn more about these early people through the built environment and cultural remnants they left behind. Kuaua Ruin (Coronado State Monument) in Bernalillo, New Mexico, features the archaeological remains of a Tiwa settlement dating back to around 1300 AD. A Works Progress Administration excavation of the site in the 1930s revealed a square kiva with many layers of mural paintings. Today, the site features some of the finest examples of pre-Columbian mural art in the United States and is open daily to visitors. The Kuaua Ruin is listed in the National Register of Historic Places.
Compiled by Kathy Alexander/Legends of America, updated August 2025.
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