I'm looking for a paved biking trail in Washington, D.C. on the TrailLink website. First, tell me the total number of trails listed for Washington, D.C. Then, apply filters to find trails suitable for 'Biking' with an 'Asphalt' surface. After applying these filters, identify the name, total length, and all listed surface types for the very first trail that appears in the search results.
Navigate to 'railstotrails.org'. Click on the 'TrailLink' link or 'Experience Trails' button to access the TrailLink platform. On the TrailLink page, locate the search functionality and enter 'Washington, D.C.' into the location search field. Identify and record the total number of results displayed for Washington, D.C. before applying any activity or surface filters. Click the 'Filter' button to open the filtering options. Under 'Activities', select 'Bike'. Under 'Surfaces', select 'Asphalt'. Click the 'Apply' button to update the search results. Identify the name, total length, and all listed surface types for the first trail displayed in the filtered results. Synthesize all gathered information into a concise answer.
The agent successfully navigates to the TrailLink platform and searches for 'Washington, D.C.'. The agent states the total number of trails listed for Washington, D.C. as '121 results'. The agent successfully applies the 'Biking' activity filter. The agent successfully applies the 'Asphalt' surface filter. The agent identifies the first trail in the filtered results as 'Anacostia River Trail'. The agent states the length of the 'Anacostia River Trail' as '21.5 mi'. The agent states all listed surface types for the 'Anacostia River Trail' as 'Asphalt, Boardwalk, Brick, Concrete'.