Mine was 7 days out from the first competition, and 14 days from my second one. I got the better PBs after 14 days, but bad weather, soft track, headwind was likely the reason I didnt get it after 7 days.
When it was talked about on this forum, most people mentioned this was a good workout to use before doing a 10 day taper. If you’re someone running mid 10s, or even high 10s/11.0 it’s practically a must that everything be completely sub max after this workout for 7-10 days.