Some runners are ecstatic when the summer heat waves goodbye and the crisp autumn air moves in. It's like free air-conditioning, because you bundle yourself up in lightweight layers for your run, and when you start to warm up, you just peel them off and the fall breeze cools you down.
Trail running is one of my favorite things to do in the fall. Since the air is so cold, you don't have to worry about voracious mosquitoes attacking you (that's why I don't trail run on hot days). You do need to watch the ground carefully though, since leaves may be covering hidden ditches, rocks and twigs. That always adds to the excitement though, and because there's so much to be aware of, there's no time to get bored.
Here are a few pieces of gear to make your fall trail running more enjoyable: