Thanks Agreed FRC - fully plan to test these things post - Iron. I've signed up for Abingdon marathon, but might trade that for a place at Chester, given I'll be closer to there after the move, which is imminent btw.
Might be FRC - possibly also overdoing it in general? You do seem to be training/racing lots (Coops in a glass house over here).
I like loops.
I smashed my half ironman on the weekend, finished in 5:25, knocking a whopping 1 hour 20 mins or so off my Pb, finishing with a 1:51 half marathon. Talked to tri club coach last night and there is an outside chance of a sub-4 ironman marathon based on my times in this race and how training has been going generally.. but we will see.
I think pace/too much effort is the vom inducer. Husband is training for a trail ultra in a couple weeks, he has been running too fast on long runs, came home on the weekend, was sick and then had to stay in bed for the rest of the day. No gels (which is probably some of the issue here), just one and half of those 'bounce' balls, and 2 litres of water from a camelbak over 26 miles.