i reckon if you gave me 2 weeks notice to run 17/22 4k, i'd cruise it.Could be recency bias but I’ve done a 2850 Cooper (twice) and a 17-22s FIFA 4k (also twice) both not that long ago and I found the FIFA much harder (and I’m presuming the 15s version would just that bit harder).
But fair enough on the sprints. But then I am built for speed not for comfort as they say
if you gave me 2 weeks notice to run 2600m in 12 mins i'd get nowhere near.
i'd fail the sprints for both though!