The airport ride still goes in the winter, but that is a real sufferfest.
You are rarely ever alone on the first 20~ miles on the Comet. After you get out past Brushy Mt tunnel it gets a little deserted though.
I'm not far from Columbus if you want to contact me about getting together for some rides. I am headed to Hamilton Georgia down near Callaway Gardens for the Wheel O'Fire ride April 14th and I am planning on doing the Tour de'Lake around West Point lake in May. I'd love to meet and ride with some other cyclists who have a club ride mentality on these rides, "One for All and All for One".