There are night rides which can be fun although I am not a fan, the farm animals scare me when I can't see them! You could get a trainer and become buddies with Coach Troy.
Personally when it gets dark early I run a lot. Our local trail is well lit and right next door to the fire station so the firemen (and women) plus the local Constable are usually out. It feels safe enough to be out at dark and come Christmas time they decorate the light poles with Christmas lights.
Of course I do live in Texas and can be outside year round quite comfortably.
Amanda
2011 Specialized Epic Comp 29er | Specialized Phenom | "Marie Laveau"
2007 Cannondale Synapse Carbon Road | Selle Italia Lady Gel Flow | "Miranda"
You don't have to be great to get started, but you do have to get started to be great. -Lee J. Colan