For the first ten minutes my lungs burned. Thereafter, the discomfort ceased.
I ran with a big, long, and jagged stick in one hand and MACE for dogs in the other hand. I didn't see the unfriendly canine today.
My pace was 14 minutes.
I will take off from running until race day which is Saturday. I'm really glad I ran in the cool air this morning. If it's the same temperature on Saturday I can look back on today's run with some confidence.