Patuxent National Wildlife Refuge (South Tract)
Trailhead Parking – Visitors Center 10901 Scarlet Tanager Loop, Laurel, MD 20708-4027
Trailhead Coordinates 39.02773, -73.79912
Approximate Time from BMPA – 45-60 minutes
Meeting Time – 10:30 AM
Hiking Distance – 3.8 miles (Loop)
 
The All Trails link will provide more information on location, directions, description, and pet friendliness.  It will also provide an elevation profile.
 
https://www.alltrails.com/explore/trail/us/maryland/patuxent-wildlife-refuge-loop-trail
https://www.fws.gov/refuge/Patuxent/
https://www.fws.gov/uploadedFiles/Region_5/NWRS/South_Zone/Patuxent_Research_Refuge/SouthTractTrailMap.pdf