[stevenhubertron]

I'd also consider trail running. I sometimes run after work. I don't carry alot, and on the trails at sunset I hardly see anyone. I could see myself taking a tumble and needing help. I once encountered a wolf out there and sprinted like never before to get out of the area. I could have easily fell.

[photojosh]

Yep. I broke my ankle because I had to get back home quickly and I tripped while descending some boulders. Fortunately I was in mobile coverage and on a trail that a lot of surfers use, so I was able to call an ambulance and had a few surfers stop and help me out.

[LorenPechtel]

Yeah, trail runners certainly could take a tumble, also. I see plenty of them and I'm amazed at their ability to avoid injury on all the rocks on the trail.