Well, I commute using my feet, not a bike, so maybe this isn't as relevant.
It takes me about 7-10 minutes walking from my apartment to the school I work at. It's pretty awesome. Except when it isn't...
It rarely snows where I live, but last year it surely did. It wouldn't have been so bad if there was sand on pedestrian pathways for students and walking-faculty; there *wasn't*. South Korea is 70% mountainous and hilly almost everywhere, so this made for some rather interesting walking. Students ran, fell, got up, ran more, fell more, and had a blast. But I--trying to retain some sense of teacherly dignity--was petrified and walked gingerly with side-steps to make it up the ice-covered hills. I didn't fall, although I almost did a few times.
It probably took me 20 minutes to get to work those icy days.
This winter is meant to be colder. I hope that doesn't mean more slipping and sliding in my future :-(
(PS: I'm from Texas, and I'd never had to walk up an icy hill before.)