Newmarket Racecourse was created just north of this location by 1793, when Petersburg was emerging from the Revolutionary era as a growing commercial town. Horse racing had deep roots in colonial Virginia and ranked among the new nation's most popular spectator activities. A one-mile oval allowed repeated heats and formal competition. Race meetings also worked as major social occasions, drawing planters, merchants, politicians, gamblers, laborers, and visitors from long distances while supporting stables, taverns, trades, and transportation.

The racecourse stood within a landscape already marked by war. In April 1781 British regulars under Major General William Phillips advanced from City Point toward Petersburg, an important supply center. American militia under Baron von Steuben resisted at Blandford before retreating across the Appomattox. Roads and open ground near the future track carried troops and matériel during this campaign. No separate Revolutionary battle is firmly documented on the racecourse property, so its 1781 association is geographic rather than an event at an operating track.

In the decades after independence, Newmarket developed a national reputation. William Ransom Johnson, often called the "Napoleon of the Turf," based his influential racing operations in Petersburg. Celebrated horses including Sir Archy, Boston, and Planet competed at the course or were associated with its racing world. Their reputations helped shape American bloodstock and attracted spectators. Newspapers reported matches and pedigrees, turning race results into news circulated well beyond Virginia.

The glamour of the turf depended on skilled labor that historical accounts often minimized. Enslaved African Americans served as grooms, exercise riders, jockeys, trainers, and stable hands. Their knowledge of horses, conditioning, track conditions, and race tactics was essential, even when owners received public credit and prize money. Newmarket therefore reveals both the broad popularity of early American sport and the way slavery structured leisure, wealth, and expertise in antebellum Virginia.

War returned in 1864 and 1865 during the long Petersburg campaign. Fighting occurred near the racecourse on June 18, 1864, as Union forces tried to break Confederate defenses, and again on March 25, 1865, during the final weeks of the siege. Military earthworks and urban expansion altered the area. Racing declined after the Civil War, as the region's economy and social order changed, and the track had disappeared by 1903.

The marker preserves a place whose physical form is gone. Its history is best understood as layered rather than confined to the spreadsheet's Revolutionary date: a post-Revolutionary sporting institution rose amid a former campaign corridor, relied on enslaved skill, became nationally prominent, and later lay within a Civil War battlefield. Newmarket connects recreation to commerce, labor, and military geography. The roadside location invites visitors to reconstruct an oval, crowds, stables, and contested ground beneath the modern Petersburg streetscape.