Boston Marathon - Wikipedia
https://en.wikipedia.org/wiki/Boston_MarathonIn 1975, the Boston Marathon became the first major marathon to include a wheelchair division competition. Bob Hall wrote race director Will Cloney to ask if he could compete in the race in his wheelchair. Cloney wrote back that he could not give Hall a race number, but would recognize Hall as an official finisher if he completed the race in under 3 hours and 30 minutes. Hall finished in 2 hours and 58 minutes, paving the way for the wheelchair division.