I was doing a good time , around 8 : 20 minutes per mile pace which would have given me a PB .
Around 9 miles my legs suddenly decided they were tired , it was like a switch had been flicked and they had nothing in them .
I was doing a good time , around 8 : 20 minutes per mile pace which would have given me a PB , but around 9 miles my legs suddenly decided they were tired , it was like a switch had been flicked and they had nothing in them .