Four Mile Run Trail

Four Mile Run Trail
Name	Four Mile Run Trail
Location	Northern Virginia, United States
Use	Multi-use trail
Surface	Asphalt, concrete
Established	1970s–1990s
Difficulty	Easy to moderate
Season	Year-round

Four Mile Run Trail Four Mile Run Trail is a multi-use paved trail in Northern Virginia that follows the Four Mile Run stream from the Arlington County border through the City of Alexandria to the Potomac River. The corridor links several Arlington County parks, Alexandria neighborhoods, regional transit nodes and the Mount Vernon Trail, creating connections to the George Washington Memorial Parkway, National Mall, and the Potomac River waterfront. The trail serves commuting, recreational, and ecological functions within the Washington metropolitan area, and intersects with multiple regional planning initiatives and funding sources.

Route and description

The route begins near the Columbia Pike corridor and proceeds southeast through Arlington County municipal greenways, paralleling I-66 and US 29 in sections before entering the City of Alexandria. It passes under transportation infrastructure including the Washington Metro elevated tracks near the Blue Line and the Yellow Line, and intersects with the W&OD Trail via connection routes and local streets. The trail crosses tributary bridges that span Four Mile Run and adjacent stormwater channels, linking to parklands such as Long Branch Nature Center, Bon Air Park, and Glebe Road Park. The terminus interfaces with the Potomac Yard development area and provides continuity to waterfront promenades near the George Washington Masonic National Memorial and the Alexandria Old Town Historic District.

History and development

The corridor’s development was influenced by mid-20th-century flood control projects coordinated by the United States Army Corps of Engineers and municipal floodplain planning undertaken by Arlington County Board, Alexandria City Council, and the Northern Virginia Regional Commission. Early trail segments were constructed under state and federal transportation enhancement grants administered by the Virginia Department of Transportation and metropolitan agencies including the Washington Metropolitan Area Transit Authority planning offices. Community organizations such as the Four Mile Run Conservatory Foundation, neighborhood civic associations, and the Alexandria Archaeology Museum advocated for trail alignment that preserved cultural resources and stabilized riparian banks. Subsequent phases incorporated designs from consultants who had worked on projects for the American Society of Landscape Architects award-winning urban streams, aligning with guidelines from the U.S. Environmental Protection Agency and the National Park Service for greenway corridors. Periodic upgrades coincided with transit-oriented developments around Braddock Road station and the King Street station, and with regional bicycle plans spearheaded by the Metropolitan Washington Council of Governments.

Recreation and usage

Users include commuters traveling to Rosslyn and Crystal City, recreational runners from nearby universities such as George Mason University and participants in organized events promoted by groups including Potomac Riverkeeper Network and local chapters of Sierra Club. The trail is frequented by birdwatchers monitoring species listed by the Audubon Society, anglers accessing permitted fishing spots under regulations from the Virginia Department of Game and Inland Fisheries, and cyclists following routes mapped by the League of American Bicyclists. Annual participation spikes during community events organized by the Arlington County Parks and Recreation Division and the Alexandria Office of Historic Alexandria, and the corridor supports informal fitness groups, youth cycling programs affiliated with USA Cycling, and seasonal markets coordinated with the Alexandria Farmers’ Market.

Ecology and environment

The riparian corridor is characterized by floodplain hardwood stands similar to documented habitats in inventories by the Virginia Department of Conservation and Recreation and hosts a mosaic of native plants promoted by restoration efforts connected to the Chesapeake Bay Program. Stream stabilization projects have implemented bioengineering techniques consistent with guidance from the U.S. Fish and Wildlife Service and the Natural Resources Conservation Service. Restoration initiatives aimed at reducing nutrient loading have been supported by grants from the Environmental Protection Agency Chesapeake Bay Program and technical assistance from the Prince William County Soil and Water Conservation District and regional watershed partnerships. Wildlife documented along the corridor includes species monitored by the Maryland Department of Natural Resources and migratory birds listed in surveys coordinated with National Audubon Society local chapters.

Infrastructure and access

Key infrastructure includes underpasses beneath arterial corridors such as I-395 and grade-separated crossings adjacent to CSX Transportation rights-of-way, designed with input from the Federal Highway Administration and the Virginia Department of Transportation. Access points connect to transit via Braddock Road station, Ronald Reagan Washington National Airport transit connections, and local bus routes operated by Arlington Transit and Alexandria DASH. Lighting, signage, and CCTV options have been evaluated in partnership with Arlington County Police Department and Alexandria Police Department for safety. Stormwater management facilities incorporate standards promulgated by the Chesapeake Bay Program and local stormwater authorities.

Management and maintenance

Management responsibilities are shared among municipal agencies including Arlington County Department of Parks and Recreation and the City of Alexandria Department of Recreation, Parks & Cultural Activities, with coordination through regional entities like the Northern Virginia Regional Park Authority and the Metropolitan Washington Council of Governments. Maintenance regimes follow asset management practices consistent with guidelines from the American Public Works Association and involve volunteer stewardship from organizations such as Alice Ferguson Foundation and local watershed groups. Funding streams combine municipal budgets, state transportation funds from the Virginia Department of Transportation, and federal grants administered by the Federal Transit Administration and the U.S. Department of Transportation. Regulatory compliance engages the Virginia Marine Resources Commission for in-stream work permits and the U.S. Army Corps of Engineers for Nationwide Permit coordination.

Category:Trails in Virginia