There's a few things to try here (fixed mine):
Inov-8 have 2 different lasts - Precision (narrower) and Standard (wider). Check which is which on their website. If you're in the NW Running Bear and Up&Running Chester at least have some stock.
Around 2/3 full now - you should have another couple of weeks before the race limit.
Ellesmere Port has just started this week as another alternative.
Entries now open online from www.helsbyrunningclub.org.uk
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