I just started trail running this past summer, and for the past two or three months, I have just felt myself getting fat and out of shape. Most of my main winter activities are powered by mechanics, and I haven't been getting enough real exercise.
Long story short, I've been looking for something that would allow me to run during the winter. At first I was thinking running/race snowshoes, but the trail is typically hardpacked and not powdery, and snowshoes seemed like expensive overkill.
At OR, I came across a better solution for my needs: the Hillsound Trail Crampon. Shooting the gap between crampon and chain/wire/spike traction accessories, the Trail Crampon has carbon-steel toe and heel crampons held to the elastomor with welded metal chains.
According to the rep that I spoke to, two main things make this specific model more suitable for winter running than other systems: the Velcro toe strap that holds it in place and prevents the elastomor from sliding around, and the sizing system, which has four individual sizes (S/M/L/XL) to get the closest fit possible. The 11 spikes are placed in such a way as to provide equal distribution of your weight, and the front spike plate is hinged to allow for a natural step.
I'm trying to weasel a pair for testing at the moment, and hope to report back soon, but if you're the type that can't sit still in the winter and need a traction device specifically for running, these are worth looking into. They definitely look like a step up from Yak Trax or Stabilicers. Retail is $60, and you can find more info hillsound.com.