Hi Letsrun,
Rank these times from the easiest to hardest, based on how many people did it and how hard it is to achieve the time.
1:55 800m
3:45 1500m
8:00 3000m
14:00 5000m
29:00 10000m
1:05 Half M
2:15 M
Obviously it's going to take more time of training to run a 2:15 Marathon than a 1:55 800m, but less people are genetically capable of a 1:55, so take both components into thought (aerobic base time and genetic capability)
Discuss.