On October 24, 1976, 2,090 runners began the first NYC Marathon through all five boroughs. Marathon Handbook reports this event marked a significant shift in urban running.

The race showcased a new blueprint for marathons, uniting cities and boosting civic spirit. It shifted running from a niche activity to a family sport, attracting everyday participants. Read more culture coverage.

Before 1976, marathons were held in parks or rural areas, largely unnoticed. The NYC Marathon's urban setting revolutionized the sport, inspiring similar events worldwide. Related: Valencia Half Marathon Elite Start List Announced.

This original Runner World brief is based on reporting from Marathon Handbook. Visit the source for its complete reporting, context and any later corrections.