QUICK FACTS Total miles: 20 (in Pitkin County) Acquired by: Pitkin County Key features: The Rio Grande Trail links the Roaring Fork Valley between Aspen and Glenwood Springs - a distance of 42 miles. The 20 miles managed through the Rio Grande Trail Management Plan are between the Pitkin County line at Emma and the Aspen Post Office. The former railroad grade is paved except for a roughly 2-mile stretch below Stein Park (outside of Aspen), which has a crusher-fine surface. Soft-surface track alongside the pavement or on a separate alignment is available in most sections. The trail within Pitkin County is open year-round and groomed for winter nordic use as conditions allow. Non-motorized uses, including walking, running, biking, horseback riding and cross-country skiing are permitted. Motorized uses are prohibited with the exception of Class 1 e-bikes (approved through 2018 amendment to Title 12) and devices governed by the Other Power-Drive Mobility Device Management Plan (see below). The speed limit is 20 mph. Dogs on the trail must be leashed. The trail provides access to public lands and trailheads, fishing access to Roaring Fork River in some sections; overlooks Slaughterhouse Falls on the Roaring Fork; and provides access to Stein Falls.