The Old Spanish National Historic Trail is co-administered by the National Park Service and the Bureau of Land Management.
Aaron Mahr Yáñez, Superintendent, National Trails Intermountain Region, National Park Service, 505-988-6736
The trails office is at 1100 Old Santa Fe Trail, Santa Fe, New Mexico.
Sarah Schlanger, Trail Administration, Bureau of Land Management, 505-954-2172
The BLM New Mexico State Office is at 301 Dinosaur Trail, Santa Fe, New Mexico.