The Conejos River Valley is home to scenic hiking trails, mountain access, white water rafting, and calm waters for anglers. The Conejos River Valley was carved by its namesake river. The Conejos River stretches nearly 93 miles, partially through the Rio Grande National Forest, and serves as a tributary to the Rio Grande itself. Fittingly, this waterway begins just north of the New Mexico border in south-central Colorado near the town of Conejos. But the beauty of the Conejos River Valley isn't just for those who are looking to fish.