Has anyone had a prior experience that a toenail fell off just before a long running race i.e. marathon or longer?
I’ve had a black toenail after a trail run since May. It was accidentally lifted up this morning (still attached at the moment). Looks like it’s about to fall off… just in time for the 50K run this weekend 
The new one beneath it (or what I think is the ‘new nail’) looks still fresh, soft though… Will it cause any discomfort (e.g. chafing) if the new one is still tender at the run? (Or, shall I just stop worrying about it… HTFU, just go for a run? 
Thanks.