This record group consists of NYRR race results and demographics dating from 1970 to 2007. Records include: official finish lists and lists of entrants; award winners and finishers grouped by category; demographics and statistics relating to various aspects of the New York City Marathon and other NYRR races; and NYRR membership demographics.

Series I contains race results, demographics, and statistics pertaining to the New York City Marathon. Results span from the first New York City Marathon in 1970 to the 2006 ING New York City Marathon and include official and unofficial finish lists as well as lists of entrants, award winners, and Athletes with Disabilities (AWD). The records are complete with the exception of the 1978-1979 and 1984-1989 marathons, which list only the award winners. Race results of the 1972, 1973, 1977 and 1980 marathons are missing and not included in the collection.

Demographics in this series report on the gender, age group, marital status, education, previous race experience, club and team affiliation, occupation, and geographical distribution of marathon entrants. Statistics also compare marathon entrants and finishers across years. This series also includes records documenting race entry requests and fees, race bib assignments, and New York City Marathon Streakers who have run the race 15-plus years in a row.

Series II contains race results and demographics relating to the Mini Marathon, Trevira/Lamisil Twosome, New York Games, as well as smaller NYRR races.

Mini Marathon results span from 1979 to 1999 and consist of official finish lists, team and category results, and lists of award winners and entrants. Sponsors of the Mini Marathon for the years represented in this series are: L’eggs (1984-1990); Advil (1991-1997); and Avon (1998-1999), when the race became known as the Avon 10K. Race results are categorized by overall finish, age groups, and teams, including mother-daughter and sister-sister teams.

Trevira/Lamisil Twosome race results date from 1979 to 1998 and contain results for both the 10 Mile (later 10K) and 2 Mile races that comprised the event. Rankings were determined both for couples and individual finishers. Also included are lists of finishers competing in special categories, including boxers and runners who worked in the media and textile industries. The demographics report pertaining to the Trevira Twosome includes information on the age range, marital status, education, club affiliation, occupation, and geographical distribution of entrants and finishers.

This series also contains the results of the various track and field events of the New York Games from 1989 to 1995 including distance races, pole vaulting, and the long and high jump competitions. The results of all other NYRR races are grouped together and arranged chronologically. These document smaller races from 1980 to 2003 including the Corporate Challenge, 5th Avenue Mile, Midnight Run, Empire State Building Run-Up, Joe Kleinerman 10K, Run for the Parks, and Brooklyn Half Marathon.

Series III consists of monthly NYRR membership demographic reports from 1984 to 2007 arranged chronologically. The reports include information on the age, sex, geographical distribution, team affiliation, occupation, and membership type of NYRR members. This series also contains reports documenting membership renewal rates from 1992 to 2001 and instructions for compiling and printing the monthly demographic reports.