I am finding I have no problem starting my long runs alone, as long as I get started. On Friday I pushed the time of my down-week 8 mile run back as late as I could and still have sunlight.
It probably did not help that it was overcast and just sort of dreary outside. At least it was warmer than the past two Fridays when temps were in the teens as I started out.
And though a down week, the run was all uphill.