The Rio de los Pinos is a scenic and challenging river that flows through southern Colorado and northern New Mexico. Originating high in the San Juan Mountains near the Continental Divide, it flows generally southeast through remote wilderness areas before joining the Rio Grande. The river carves through rugged terrain, including the dramatic Toltec Gorge, where it drops 800 feet below the tracks of the famous Cumbres and Toltec Scenic Railroad.

Paddling opportunities on the Rio de los Pinos range from calm floats to intense whitewater. The river offers several distinct sections catering to different skill levels. The Wilderness Run in Colorado's Weminuche Wilderness provides a true backcountry experience with Class V rapids as the river drops half a mile in elevation through granite and quartzite gorges. The Osier to San Miguel section, crossing from Colorado into New Mexico, is an extremely challenging 8.8-mile Class V+ run through the Toltec Gorge, featuring continuous technical rapids, sieves, and waterfalls. For intermediate paddlers, the 12-mile Atencio Canyon to Los Pinos section in New Mexico offers Class II-III whitewater.

The river's flow is primarily snowmelt-driven, with the best paddling typically occurring from late spring through early summer. However, some sections like the Atencio Canyon run may be enjoyable into late summer at lower flows. The surrounding ecosystem supports diverse wildlife, including moose and elk, which paddlers may encounter along the banks.

Key landmarks include the Toltec Gorge, the Cumbres and Toltec Scenic Railroad, and the Carson National Forest. The river flows near the Cruces Basin Wilderness and through the Rio de los Pinos Wildlife Area. Primary access points are found near Osier, Colorado and the towns of San Miguel and Los Pinos in New Mexico. Antonito, Colorado and Tres Piedras, New Mexico are the nearest larger communities for supplies and logistics.

The Rio de los Pinos holds cultural significance as a traditional water source for local communities and plays a role in the region's railroad history. Today, it's valued for its recreational opportunities and as a vital ecological corridor.

Safety is paramount when paddling the Rio de los Pinos, especially on its more challenging sections. The remote nature of much of the river necessitates solid self-rescue skills and proper equipment. Paddlers should be aware of rapidly changing weather conditions and the potential for flash floods. For those seeking a multi-day adventure, the Wilderness Run offers the opportunity for an epic backcountry trip, though it requires extensive planning and experience. The river's varied character also allows for combining different sections to create custom multi-day itineraries suited to a range of skill levels.