New York is remeasured and two world bests are voided
Alberto Salazar wins the 1981 New York City Marathon in 2:08:13, apparently breaking Derek Clayton's twelve-year-old world best; Allison Roe also runs an apparent world best. A remeasurement of the course, carried out in December 1984, finds it about 150 m short of 42.195 km, and both marks are rescinded. Organisers had already added about 99 m for 1982. This is the case that shows why the short course prevention factor exists: a course that is 0.35 percent short converts every performance on it into a number that means nothing.
Historical — it happened, and the record is settled.
Subjects
- New York City Marathon · route · United States
- Calibrated bicycle course measurement · technology · not located
- New York Road Runners · organisation · United States · not located
Evidence
Partly verified — Core facts are sourced; some optional detail is deliberately absent.
The Measurement of Road Race Courses
Road courses are measured by the calibrated bicycle method with a Jones counter along the shortest possible route, with a short course prevention factor of 1/1000 applied to the calibration constant. V55 verification basis: the PDF was identified and summarised through search; direct retrieval was blocked by the egress proxy and the manual was not read in full.
World Athletics in co-operation with AIMS · Partly verified
https://aims-worldrunning.org/measurement/MeasurementOfRoadRaceCourses.pdf
Recorded on New York City Marathon
- The first New York City Marathon, in Central Park
- New York goes to five boroughs
- New York is remeasured and two world bests are voided
- The World Marathon Majors series is announced
Related
Related because they share a subject in the Atlas — never because the text looks similar.
- The World Marathon Majors series is announced · 2006-01-23
- New York goes to five boroughs · 1976
- The first New York City Marathon, in Central Park · 1970-09-13