Thanks! I just set the camera down on a park bench. The tripod wouldn't fit in my camelbak now matter how I tried to wedge it, haha.

 I set the shutter speed very low and the ISO very high on my camera because it was dark (nightride). This allows the camera to capture a detailed image in low light conditions, but it also means that anything fast moving is either invisible or leaves a trail, because the shutter is open and taking in light for such a long time. The result looks cool when a rider's light leaves a trail as the rider passes by, which is the case here.

I saw some awesome shots like this in an old issue of Bike Magazine, you could tell exactly which line people took through rock sections.

 yehh ive seen shots like this before, they were light streaks on a gnarly rock garden; it was sick