I ran Week 2 Day 2 today. Last time I did C25k, it was sunny and warm out, so I ran outside. Now there is snow and ice everywhere, so I'm forced to run on a treadmill. Treadmill running is so different from running outside. In some ways, it's easier, but I run on a 1.5 degree slope to compensate. The scenery isn' t as good. So far, running outside is much more enjoyable than running on a treadmill. In a few months, the weather will improve and I can go back to running outside.
I agree, most people who are thinking about starting the C25k are probably going to join enmass on January 1. My thinking is that if one isn't determined to start changing your life now, one will never permanently change. There is always some excuse to put things off. They will start on January 1, but many will drop out before the infamous Week 5, or week 9. By having a few of us a couple weeks ahead of that pack, we can cheer them on and let them know that this program really does work. It can take couch potatoes to runners in a couple months.