When I was building up mileage with long runs over the course of several weekends, in the 15-20 mile range, I was affected by a number of injuries that gave me great concern. There was a high inside left ankle pain that I suspected was a precursor to shin splints. There were the spiking pains in the calves. The knees were sore once or twice. My lower back ached regularly. I was stiff getting up in the morning. I had a sharp pain on my sole near my toes on the right side. All the niggling problems haven't necessarily gone away but in my last long runs they didn't matter. I had endured them. They had not stopped me. They didn't get worse. I ran through them or they disappeared. Running high mileage takes its toll but it builds tolerance and endurance for the long haul ahead. I feel like I won the training race.
Therefore, I am skipping my measley three mile run tonight. Tomorrow I'll do 8 or 9.