Cold. Slight headwind, crosswind. Remembered to lean forward and lengthen my stride on the downhills. Easy to remember to shorten stride on uphills. I was not sure about my clothing but it worked out just right (thin poly shirt, poly long sleeve shirt, nylon jacket, two pairs of lycra tights, double socks, hat, gloves, garbage bag). Might have gone out too fast, but I had not trained much so I was just going with how I felt. I was hoping to break 50 (8:00 min pace) so I'm very happy with 47:24.

I had not trained in running in such cold, 29F. Bicycling in cold helped prepare mentally.