not a regular on here and do most of my running in the dark winter evenings - 5 miles @ 40 mins, from 8.46 to 7.30 for final mile.
How much faster (say in % terms) do people run in daylight?
serious question.
Why do you think people would? Is it because you run off road with a headtorch?
As a newcomer my times have been going down with each month as I get fitter anyway but in the summer I run much faster in the morning or evening than at noon as its cooler and in the winter 90% of my running is in the dark,