Note: The red dots in right chart indicate the fastest times to date but not all of those marks are radified world records.
Points of Interest:
Which countries are more dominant in shorter vs longer events?
Are the dominant countries at a particular distance the same for men and women?
The '70s and '80s were noted as a time of rampant and systematic drug use: Can you find evidence of that in the chart? Can you guess which distance(s) and/or gender benefit most from drug use? Any country(ies) you might suspect of systematic doping?