The Sangre de Cristo Mountains run from Poncha Pass at the north end of the San Luis Valley to Glorieta Pass near Santa Fe, New Mexico. Most of the range is shared by two National Forests, which abut along the range divide. Most of the northeast (Arkansas River) side is located within the San Isabel National Forest, while most of the southwest (San Luis Valley) side is included in the Rio Grande National Forest. The central part of the range is designated as the Sangre de Cristo Wilderness. The Great Sand Dunes National Park and Preserve sits on the southwestern flank of the range at the edge of the San Luis Valley. The range divide is traversed by no paved roads, only by four-wheel drive and foot trails over Hayden Pass, Hermit Pass, Music Pass, Medano Pass, and Mosca Pass.