I went out this afternoon from the office instead of running with the Runner's Choice Marathon Training Clinic in London. It was just 7 miles and it wasn't a terrible day weather-wise -- a temperature of -9 degrees C. and just a light wind from the southeast. I wore my black turtleneck-ish running shirt, my Boston tights, wool socks, my black Boston jacket, my orange touque, ear muffs and my Boston string gloves. I was warm enough.
I did this out-and-back route:
Here are my kilometre splits:
5:36 (pace for 600 m.)
5:19 (pace for 600 m.)
So roughly 15 seconds per kilometre coming back than going out -- but still slow by normal standards. I'll chalk it up to the slippery footing and the extra layers of clothing.