I think I’ve made progress on the digestive issues when on long runs, I ate an incredibly bland diet for two days before - no fruit, white bread, minimal veg, night before fish and rice, big difference! Too early to say I’ve cracked this but got 10 miles in, last few miles were so hard though!
It seems I’m going to have my run buddy on the big day after all too which I’m relieved about, 5 weeks to go to half marathon day....