Must we go down this road again?
I was very much involved at the time and have all of the documentation. It would take pages upon pages on this thread to prove this issue one way or the other.
The "short" version (no pun intended).
1. The measuring methods and allowable tolerances used for measuring road courses didn't really stablize until 1983 (around the time of the 1985 LA Olympic Marathon Measurement) - well after Salazars 2:08:13
2.At that time of the measurement there was some confusion as to the actual path to measure - 1 meter from the curb?, 30 cm from the curb?, shortest path?, or to quote Ted Corbitt - "the prudent path"?.
3. The validation measurement by Tom Knight didn't follow exaclty the same path of the original measurement made by Bill Noel (see #3).
4. Some of the difference had to do with the path run through Central Park - where Salazar ran down the middle of the road following the blue line - the validation was done measuring the tangents.
5. Today's standards for a world best- course must not have a net drop of greater then 1 meter/kilometer and a separation from start to finish (straight line) of not greater then 50%-World Best & 30% for a US Best. The ING New York Marathon meets both specs. for a World Best.
Many of the top measurers met in LA to measure the Olympic Marathon. We talked for hours going over the methods, techniques, tolerances and procedures. We all walked away from that weekend with a good feeling that we were on the same page.
1. By the standards of that time, Salazar's performance was the fastest marathon every run.
2.I would leave all of these great performances (including Clayton and Salazar) on the list of progression of World Bests but include a line below 1984 with a note: "worldwide measuring procedures and tolerances did not become standardized until after 1983"
May we end "beating this dead horse"?