How much more winter?

Things are quite a bit warmer today, but the freezing temps have been keeping us training inside. I've really got to start getting on track for doing the Cherry Blossom 10 miler on Apr 1. Both Binni and I are running it, but for me this will be my longest distance event. And I still hate running! Where is this runner's high I hear about? I only get a constant runner's low.