I know this isn't a sanctioned run guys...but please do two things out there:
-Be careful. Things can have a way of going wrong in a hurry at night, and in the rain. I'd hate to see things getting broken, or even worse...people.
-Be responsible. Take a look at what the trail conditions are like, and make a judgement call on whether or note you'll be causing a bunch of ruts and damage. IF you feel that's likely to happen, please tread lightly by choosing an alternate, rocky route...or rescheduling for a time that offers better conditions.