I'm a year-round early morning weekday rider (sometimes on the weekend, too). Up at zero-dark-thirty and out for 15-20 miles. Its a standard route with a few deviations to keep it interesting. Its nice since the streets around here have good street lighting and broad shoulders with painted bike lanes and very little traffic before the rush hour starts. If I don't get out at those early hours I usually have to wait until after about 9AM to avoid all the paranoid soccer moms in SUVs that must drive their kiddies to school and have no regard for any traffic safety rules.