Task: Question Answering
Input (English): Passage: The east–west trail begins at the Poughkeepsie Bridge, by Haviland Road. The 1.28-mile (2.06 km) Poughkeepsie Bridge was opened as a pedestrian walkway in 2009. The bridge is a National Recreation Trail, and connects to the Dutchess Rail Trail to the east, creating a contiguous 18.2-mile (29.3 km) rail trail system that spans both Ulster and Dutchess counties.The Hudson Valley trail continues 0.5 miles (0.80 km) west from the Poughkeepsie Bridge to a bridge over Mile Hill Road, then another 0.1 miles (0.16 km) to a crossing at US 9W. At the 1-mile (1.6 km) mark, the trail reaches a bridge over Vineyard Avenue. About 1.5 miles (2.4 km) from the bridge, the trail crosses under New Paltz Road. Almost 0.5 miles (0.80 km) from this road, the trail reaches the Black Creek Wetlands Complex. Black Creek is one of the two "principal streams" to run through Lloyd; it bisects the town as it flows north and pools in a pond. The wetlands complex itself is important for water drainage. Part of New York State Department of Environmental Conservation region 3, the complex contains Plutarch Swamp and one of the region's largest dwarf shrub bogs, hosting a variety of rare species. The complex also includes the Swarte Kill, Lloyd's second major waterway. The trail continues an additional 0.5-mile (0.80 km) past the beginning of the complex to Tony Williams Park.There are four parking areas along the trail, by Haviland Road, Commercial Avenue, the Rotary pavilion, and at Tony Williams Park. The trail is 12 feet (3.7 m) wide and 4 miles (6.4 km) long; it is paved with asphalt and suitable for hiking, bicycling, horseback riding, roller blading, and cross country skiing.In 2018, Hudson Valley law firm Mainetti & Mainetti, P.C. published an updated bicycle map that showed the proposed route of the Hudson Valley Rail Trail, and how it links the Walkill Valley Rail Trail and River-to-Ridge-Trail with the Dutchess County Rail Trail. 
Question: What is the total length in miles is the Hudson Valley Rail Trail?
Output (English): 4 miles.