- Parks & Trails New York
- NYS Office of Parks and Historic Preservation (OPRHP)
- Yorktown Parks & Recreation Department
- New York - New Jersey Trail Conference
- Westchester Mountain Biking Association
- Yorktown Conservation Board
- Friends of FDR Park
- Hilltop Hanover Farm and Environmental Center
- New York State Parks
- Trail Masters Touring
- Westchester Land Trust
- Lower Hudson Geocachers