stil_kannonier wrote:
Honestly cannot believe these responses so far.
60s 400 (easiest, you run really hard for 59s)
20m 5k
1:30 1/2 M
40m 10k
5m Mile
2m 800 / 3h M (tied for hardest)
There will be a split here between 'middle-distance' and 'long-distance' types, or 'fast' vs 'endurance' types.
For an endurance type, one might be able to do 17 min 5km or even better, and not run 60s 400, especially if that 400 is from a standing start; such an endurance type actually cannot necessarily actually run 'really hard', they may not ever do any all out running in training, and the nervous system does not know how to achieve it properly!
Otherwise I think the consensus is accurate: 20 5k is clearly easiest for an endurance runner, then 40 min 10km and 1:30 half marathon are very close; someone with some but not a great deal of endurance will find 40 min 10km easier, but the 1:30 is probably easier for someone with good endurance. For a 'fast' type runner, it is true I think that the 60s 400 will be easier than all of these. Otherwise, as others have written, there is a good gap between those three/four and the rest.
The marathon is a kind of different event as I see it, the training is necessarily quite different, so it is difficult to compare. If one does all the right training and executes the race correctly, it should probably be in between the 5km - 10km -half marathon group and the 5 min mile / 2min 800 group.