I know they’re shin splints as as above i used to get them playing football a long time ago! and i hadn’t even bothered trying to run because of them since. But recently i gave it a go, as i said in some old trainers and i was fine so thought i’d grown out of it too.
The guys at the shop, i had all 3 of them assessing me, agreed with my self diagnosis and explained how the wrong shoe could cause it which made sense to me.
MTT as for target times, i wish i could do 10k in 53mins, in fact i wish i could do 10k!