I have been going out at 4:30am for many years now, all year round. I usually put in a 30 mile ride and am back at the house making coffee by around 6:30. Given my early start I am riding in the dark, at least some of the time, about nine months a year and in autumn and winter my whole ride is at night. I love it. I have the streets and roads and lanes all to myself, ride by moonlight and starlight, see foxes and badgers out about their business, and enjoy the pleasure of being out and rolling while all the rest of the world is asleep.
I’ve an excellent Lupine headland and a very bright rechargeable taillight, and ride on Schwalbe Marathon Plusses as I’d just as soon not have to deal with flats in the dark and cold. Often I bring a camera to capture night images. It is a wonderful time to be out on a bicycle