I've been running along this route for several times before, 1 advantage about running around the park is that I can simply add a round if I feel comfortable, and advance in the training that way.
minor pain at the lower back as usual... had a burger for breakfast... saw a ATR, C-130 and a bigger jet, couldn't make out the model, too far.. burned only 300 Calories but...good exercise. keep it up.
